groom vs hostler

groom and hostler both are nouns.

Word	Noun	Adjective	Verb	Adverb
groom	Yes	No	Yes	No
hostler	Yes	No	No	No

As nouns, groom and hostler are synonyms defined as:

groom and hostler: someone employed in a stable to take care of the horses

Other synonyms of groom include ostler, stableboy, stableman.

groom (noun)	hostler (noun)
a man who has recently been married	someone employed in a stable to take care of the horses
someone employed in a stable to take care of the horses
a man participant in his own marriage ceremony

groom (verb)	hostler (verb)
care for one's external appearance
give a neat appearance to
educate for a future role or function