shepherd vs sheepherder

shepherd and sheepherder both are nouns.

Word	Noun	Adjective	Verb	Adverb
shepherd	Yes	No	Yes	No
sheepherder	Yes	No	No	No

As nouns, shepherd and sheepherder are synonyms defined as:

shepherd and sheepherder: a herder of sheep (on an open range); someone who keeps the sheep together in a flock

Other synonyms of shepherd include sheepman.

shepherd (noun)	sheepherder (noun)
a herder of sheep (on an open range); someone who keeps the sheep together in a flock	a herder of sheep (on an open range); someone who keeps the sheep together in a flock
a clergyman who watches over a group of people

shepherd (verb)	sheepherder (verb)
tend as a shepherd, as of sheep or goats
watch over like a shepherd, as a teacher of her pupils