ram vs sheep

ram and sheep both are nouns.

Word	Noun	Adjective	Verb	Adverb
ram	Yes	No	Yes	No
sheep	Yes	No	No	No

As nouns, sheep is a hypernym of ram; that is, sheep is a word with a broader meaning than ram:

ram (noun)	sheep (noun)
uncastrated adult male sheep	woolly usually horned ruminant mammal related to the goat
a tool for driving or forcing something by impact	a docile and vulnerable person who would rather follow than make an independent decision
	a timid defenseless simpleton who is readily preyed upon

ram (verb)	sheep (verb)
force into or from an action or state, either physically or metaphorically
undergo damage or destruction on impact
strike or drive against with a heavy impact
crowd or pack to capacity