partner

nouns

a person's partner in marriage
an associate in an activity or endeavor or sphere of common interest
"the musician and the librettist were collaborators"; "sexual partners"
is derived from
is derived from
a person who is a member of a partnership
is derived from
is derived from
is a member of
the members of a business venture created by contract
is a type of (narrower)
a human being
"there was too much for one person to do"

verbs

provide with a partner
is a type of (narrower)
give something useful or necessary to
"We provided the room with an electrical heater"
act as a partner
"Astaire partnered Rogers"
is a type of (narrower)
perform an action, or work out or perform (an action)
"think before you act"; "We must move quickly"; "The governor should act on the new energy bill"; "The nanny acted quickly by grabbing the toddler and covering him with a wet towel"