viscount vs peer

viscount and peer both are nouns.

Word	Noun	Adjective	Verb	Adverb
viscount	Yes	No	No	No
peer	Yes	No	Yes	No

As nouns, peer is a hypernym of viscount; that is, peer is a word with a broader meaning than viscount:

viscount: a British peer who ranks below an earl and above a baron
peer: a nobleman (duke or marquis or earl or viscount or baron) who is a member of the British peerage

Other hypernyms of viscount include adult male, man.

viscount (noun)	peer (noun)
a British peer who ranks below an earl and above a baron	a person who is of equal standing with another in a group
(in various countries) a son or younger brother or a count	a nobleman (duke or marquis or earl or viscount or baron) who is a member of the British peerage

viscount (verb)	peer (verb)
	look searchingly