Speech-language pathologists work with the communication-impaired to restore and augment their abilities. Practicing in the field requires a graduate degree and specialized training, but many bachelor's degrees -- including one in education -- can serve as a starting point.
couplet - a stanza consisting of two successive lines of verse; usually rhymed. line of poetry, line of verse - a single line of words in a poem. closed couplet - a rhymed couplet that forms a complete syntactic unit. heroic couplet - a couplet consisting of two rhymed lines of iambic pentameter and written in an elevated style. stanza - a fixed number of lines of verse forming a unit of a poem.
2-line stanzas. A 2-line stanza is called a couplet. aa is a rhymed couplet; xx an unrhymed couplet. The French call rhymed couplets rimes plates or rimes suivies. 3-line stanzas. A 3-line stanza of any kind is called a tercet. aaa is a triplet. axa is pretty common, occurring in forms such as the villanelle and terza rima (where in both cases there are also rhymes between stanzas). The haiku is a species of tercet, and so are some varieties of englyn (though not the one featured on this site).