General terms:
* Line: This is the most basic and general term.
* Verse: This term is often used interchangeably with "line" but can also refer to a stanza.
* Phrase: This term emphasizes the linguistic unit of the line.
Terms specific to form or structure:
* Iambic pentameter: A line of poetry written in five pairs of unstressed and stressed syllables.
* Alexandrine: A 12-syllable line of poetry.
* Hemistich: Half of a line of poetry, often used in epic poetry.
* Couplet: Two lines of poetry that rhyme.
* Triplet: Three lines of poetry that rhyme.
Descriptive terms:
* Enjambment: A line that continues onto the next line without punctuation.
* Caesura: A pause or break within a line of poetry.
* Repetition: A line that repeats words or phrases.
* Metaphorical: A line that uses figurative language.
* Narrative: A line that tells a story.
Ultimately, the most appropriate term depends on the specific context and the type of poetry you are discussing.