county agent vs consultant

county agent and consultant both are nouns.

Word	Noun	Adjective	Verb	Adverb
county agent	Yes	No	No	No
consultant	Yes	No	No	No

As nouns, consultant is a hypernym of county agent; that is, consultant is a word with a broader meaning than county agent:

county agent: an advisor employed by the government to assist people in rural areas with methods of farming and home economics
consultant: an expert who gives advice

Other hypernyms of county agent include adviser, advisor.

county agent (noun)	consultant (noun)
an advisor employed by the government to assist people in rural areas with methods of farming and home economics	an expert who gives advice