man vs manus

man and manus both are nouns.

Word	Noun	Adjective	Verb	Adverb
man	Yes	No	Yes	No
manus	Yes	No	No	No

man (noun)	manus (noun)
all of the living human inhabitants of the earth	the (prehensile) extremity of the superior limb
any living or extinct member of the family Hominidae characterized by superior intelligence, articulate speech, and erect carriage
game equipment consisting of an object used in playing certain board games
an adult person who is male (as opposed to a woman)
someone who serves in the armed forces; a member of a military force
the generic use of the word to refer to any human being
a manservant who acts as a personal attendant to his employer
an adult male person who has a manly character (virile and courageous competent)
a male person who plays a significant role (husband or lover or boyfriend) in the life of a particular woman
a male subordinate

man (verb)	manus (verb)
provide with workers
take charge of a certain job; occupy a certain work place