rhymer vs rhymester

rhymer and rhymester both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhymer	Yes	No	No	No
rhymester	Yes	No	No	No

As nouns, rhymer and rhymester are synonyms defined as:

rhymer and rhymester: a writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets)

Other synonyms of rhymer include poetiser, poetizer, versifier.

rhymer (noun)	rhymester (noun)
a writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets)	a writer who composes rhymes; a maker of poor verses (usually used as terms of contempt for minor or inferior poets)