"partner" in the noun sense
1. spouse, partner, married person, mate, better half
a person's partner in marriage
2. collaborator, cooperator, partner, pardner
an associate in an activity or endeavor or sphere of common interest
"the musician and the librettist were collaborators"
a person who is a member of a partnership
"partner" in the verb sense
provide with a partner
act as a partner
"Astaire partnered Rogers"
Source: WordNet® (An amazing lexical database of English)
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