mate vs span

mate and span both are nouns.

Word	Noun	Adjective	Verb	Adverb
mate	Yes	No	Yes	No
span	Yes	No	Yes	No

mate (noun)	span (noun)
a chess move constituting an inescapable and indefensible attack on the opponent's king	the act of sitting or standing astride
an exact duplicate	a structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.
South American tea-like drink made from leaves of a South American holly called mate	the distance or interval between two points
a person's partner in marriage	a unit of length based on the width of the expanded human hand (usually taken as 9 inches)
the partner of an animal (especially a sexual partner)	two items of the same kind
the officer below the master on a commercial ship	the complete duration of something
informal term for a friend of the same sex
a fellow member of a team
South American holly; leaves used in making a drink like tea
one of a pair

mate (verb)	span (verb)
place an opponent's king under an attack from which it cannot escape and thus ending the game	to cover or extend over an area or time period
engage in sexual intercourse
bring two objects, ideas, or people together