mansion vs manor

mansion and manor both are nouns.

Word	Noun	Adjective	Verb	Adverb
mansion	Yes	No	No	No
manor	Yes	No	No	No

As nouns, manor is a hyponym of mansion; that is, manor is a word with a more specific, narrower meaning than mansion:

Other hyponyms of mansion include manor house, castle, palace, stately home, mcmansion.

mansion (noun)	manor (noun)
a large and imposing house	the mansion of a lord or wealthy person
(astrology) one of 12 equal areas into which the zodiac is divided	the landed estate of a lord (including the house on it)