waterer vs farmhand

waterer and farmhand both are nouns.

Word	Noun	Adjective	Verb	Adverb
waterer	Yes	No	No	No
farmhand	Yes	No	No	No

As nouns, farmhand is a hypernym of waterer; that is, farmhand is a word with a broader meaning than waterer:

Other hypernyms of waterer include farm worker, field hand, fieldhand.

waterer (noun)	farmhand (noun)
an assistant who supplies drinking water	a hired hand on a farm
someone who waters plants or crops