groundsman vs groundkeeper

groundsman and groundkeeper both are nouns.

Word	Noun	Adjective	Verb	Adverb
groundsman	Yes	No	No	No
groundkeeper	Yes	No	No	No

As nouns, groundsman and groundkeeper are synonyms defined as:

groundsman and groundkeeper: someone who maintains the grounds (of an estate or park or athletic field)

Other synonyms of groundsman include groundskeeper.

groundsman (noun)	groundkeeper (noun)
someone who maintains the grounds (of an estate or park or athletic field)	someone who maintains the grounds (of an estate or park or athletic field)