Where does phrase collide?

In grammar a phrase is a group of words that behaves as a single unit inside a sentence's structure, taking its character from a head word: a noun phrase is built around a noun, a verb phrase around a verb, and each can nest inside a larger phrase to form a hierarchy. Chomsky's 1957 Syntactic Structures formalised this with phrase structure rules, which rewrite a sentence into its constituent phrases and show how a small set of rules generates an unbounded number of well-formed sentences. Here the referent is a grammatical constituent, an abstract building block of syntax defined by its head and its place in a tree, not a stretch of music that closes on a cadence, and not a frozen expression whose meaning cannot be read off its parts.[1]

Unit

A single grammatical constituent, headed by a word class and nested within a sentence

Recovery means

Not applicable

Measured by

Identified by constituency tests such as substitution, movement, and coordination, and drawn as a labelled tree

In music a phrase is a coherent unit of musical thought, a stretch of melody and harmony that hangs together and comes to rest, roughly comparable to a clause or a sentence in language and often shaped to the span of a single breath. A phrase is bounded by its cadence, the harmonic and rhythmic gesture of arrival that closes it, and by the phrasing a performer uses to group and shape the notes; Caplin's 1998 Classical Form built a detailed theory of the phrase and its cadences as the basic formal units in the music of Haydn, Mozart, and Beethoven. Here the referent is a segment of music defined by cadence and grouping, not a grammatical constituent generated by syntactic rules, and not a fixed multi-word expression stored in the vocabulary.[2]

Unit

A single span of music closing on a cadence, often about the length of one breath

Recovery means

Not applicable

Measured by

Marked by analysts from cadence points and grouping, and by performers through articulation, dynamics, and breath

In the study of vocabulary a set phrase, or idiom, is a fixed multi-word expression whose overall meaning cannot be worked out by adding up the ordinary meanings of its words: 'kick the bucket' means to die, and none of that is contained in 'kick', 'the', or 'bucket'. Nunberg, Sag, and Wasow's 1994 Idioms analysed how such expressions are frozen in form yet differ in how far their parts carry meaning, and why they behave unlike phrases assembled fresh by rule. Here the referent is a stored, conventional item of the vocabulary, learned and listed as a whole, not a constituent generated on the fly by grammar, and not a span of music delineated by its cadence.[3]

Unit

A single fixed expression listed and learned as one whole

Recovery means

Not applicable

Measured by

Diagnosed by non-compositional meaning, fixed wording, and limited grammatical flexibility