composer vs psalmist

composer and psalmist both are nouns.

Word	Noun	Adjective	Verb	Adverb
composer	Yes	No	No	No
psalmist	Yes	No	No	No

As nouns, psalmist is a hyponym of composer; that is, psalmist is a word with a more specific, narrower meaning than composer:

Other hyponyms of composer include contrapuntist, ballad maker, songster, songwriter, symphonist.

composer (noun)	psalmist (noun)
someone who composes music, usually as a profession	a composer of sacred songs