This is the phonetics description of [θ].
What is a voiceless interdental fricative?
This allows us to prove that two sounds are allophones of different phonemes in a language.
What is a minimal pair?
These are the two ends of the spectrum of morphological types of languages.
What are analytic and synthetic?
These help us "check our work" when describing syntactic relationships in tree form or otherwise.
What are constituency tests?
Dead languages are the only languages where this does not occur.
What is change?
This allows us to close the nasal cavity off from the oral cavity.
What is the velum?
A common type of sound change that takes place when a sound takes on one or more phonetic characteristics of a neighboring sound.
What is assimilation?
This is the smallest meaningful unit in a language.
What is a morpheme?
These join with nouns to form noun phrases.
What are determiners?
These are the three possible outcomes of language contact.
What are multilingualism, creolization, or language death?
This refers to the space between the vocal folds.
What is the glottis?
These four sonorant consonants can function as a syllable nucleus in English.
What are /m/, /n/, /r/, and /l/?
"Abso-freakin-lutely" is an example of this type of morphology in English.
What is infixing?
These are the funniest types of phrases in syntax and always include a noun phrase.
What are PPs?
English is a member of this language family.
What is Germanic?
It is what these type of marks are called [ ̃], [ ː ], [h].
What are diacritics?
This is where voiceless stops get aspirated in English by native speakers.
What is the beginning of a stressed syllable?
"sing, sang, sung" are examples of this type of morphology.
What is alternation?
Grammatical "gender" is a special type of these in syntax.
What are cooccurrence rules?
This is the reconstructed language from which Latin, Greek, Hindi, and English are all descended.
What is Proto-Indo-European?
Standard American English has this many phonemic vowels.
What is 15?
These determine which sounds can cooccur, and in what order, in any particular part of a syllable.
What are phonotactic constraints?
The English plural suffix has three of these: [-s], [-z], and [ə].
What are allomorphs?
This is what linguists use to determine what is grammatical or ungrammatical in the syntax of a language.
What is native speaker intuition?
This theory could explain why Victor and Genie never really learned language.
What is the Critical Age Hypothesis?