herder vs herd

herder and herd both are nouns.

Word	Noun	Adjective	Verb	Adverb
herder	Yes	No	No	No
herd	Yes	No	Yes	No

herder (noun)	herd (noun)
someone who drives a herd	a group of cattle or sheep or other domestic mammals all of the same kind that are herded by humans
	a group of wild mammals of one species that remain together: antelope or elephants or seals or whales or zebra
	a crowd especially of ordinary or undistinguished persons or things

herder (verb)	herd (verb)
	move together, like a herd
	cause to herd, drive, or crowd together
	keep, move, or drive animals