Prosody is a linguistic term in phonology. After the speaker subconsciously works out which sounds are involved in their utterance, prosody brings all of these sounds together. The prosodic rules of English will determine the stress of each word, the stress of the sentence, the intonation, and rhythm of the sentence as a whole. Although these rules may be "musical" in a certain respect, the technical linguistic term is prosody.

A "whimperative" is a linguistic term which is made from "wh" to signify question words and "imperative" to mean commands. A whimperative is a command in the form of a question. The command is thus not fully meant as a question but as a strong request that a person may chose to accept or deny. This is seen almost everywhere such as the following:

"Could you pass the salt?"

"Would you give me a hand with this?"

"Can you please keep it down?"

Note that the construction is primarily made up of conditionals such as "will/could/can/would" as opposed to questions words "who/what/when/why.” Question words signify a request for information. The constructions are such that the answer can only be a yes or no. 

Early research from the mid-twentieth century seemingly identified a critical period of language learning ability that cuts off after puberty; however, Johnson and Newport challenged this finding in 1989. They studied data from second-language learners and found that, while second-language acquisition prior to age 7 is identical in proficiency to first-language acquisition, learning ability decreases gradually into adulthood—not suddenly with the onset of puberty. This relationship has led researchers to interpret developmental changes in language learning ability as corresponding with lifelong changes in neuroplasticity, rather than puberty specifically.

A phoneme is a single speech sound that cannot be broken down any further. For example, the word mom can be broken down into the sounds “mm,” “ah,” and “mm,” but those three individual sounds cannot be broken down any further and are considered phonemes. A morpheme could be defined as one of “the smallest units of language that conveys meaning.” Syntax is a language’s set of “rules for constructing meaningful speech.” In linguistics, “an incorrect usage of language” that does not abide by a language’s syntactical and semantic rules, which govern sentence construction and word meaning respectively, is termed ungrammatical.

According to the nativist theory, we are born with a language acquisition device that allows us to learn language as children. We are all born with this mechanism, regardless of what language we speak or what methods of instruction are used to teach us how to speak. 

The language acquisition device is a hypothetical construct crafted by Chomsky that indicates that humans are unique in their ability to understand language from a young age. Young infants can acquire and produce language and begin to understand both its syntax and grammar. In this way, only humans can understand language, as humans are the only species that have such a disposition from birth (as opposed to developing such a disposition from exposure to language).

Onsets are consonants that begin a syllable. The onset of the syllable [bat] is [b]. Codas are consonants that end a syllable. The coda of the syllable [bat] is [t].

Generally speaking, languages tend to prefer to have syllable structures that have an onset but no coda. For instance, there are theoretically two different ways to syllabify the word "kitten". It could be [kit]-[ten] where the [t] is a coda of [kit]. Or, the way we actually say it, [ki][tten] where the first syllable has no coda at all.

There are of course exceptions that can't be discussed at length here, but this is a general phonological rule that guides sound structure. 

Semantic ambiguity is the opposite of structural ambiguity. Semantic ambiguity is when the structure of a sentence is restricted to one particular structure but a word in the sentence makes it ambiguous. For instance, the word "bat" in the sentence "I touched the bat" can mean the animal or a baseball bat.

Ellipsis is when a word is omitted in a sentence since it is likely that the word will be filled in by the audience. Ellipsis makes our sentences more efficient to produce and less repetitive. For instance, instead of saying "John ran to the store and John talked to the clerk" we can "ellide" (use ellipsis) "John" and say "John ran to the store and talked to the clerk". In fact, we use ellipsis so much that if we were to use "John" twice in that sentence it may sound like we were talking about two different Johns!

Language can reveal many things about a person's beliefs, state of being, and even underlying mental conditions. This is not restricted to what the person is trying to convey in meaning but the actual structure of their sentences or word choices. For instance, a linguist could look at two passages written by different people about the same event and conclude many things about each person's personality. One person may have used "I" many times in telling the story, which reflects valuing their subjective experience over objective fact. The other may have used a combination of writing conventions that indicate value in both both subjectivity and objectivity related to the retelling of the event. Psychologists can even analyze speech to see if a person has a serious mental condition such as schizophrenia or psychopathy.