Before revision: "Work spouse" is a phrase, mostly in American English,Cambridge dictionary article referring to a co-worker,: "They are platonic, close, opposite-sex couplings, with no romantic strings attached"; "A recent workplace survey found that 32 percent of workers say they have an 'office husband' or 'office wife.'
After revision: "Work spouse" is a term or phrase that is mostly in American English,Cambridge dictionary article referring to a co-worker,: "They are platonic, close, opposite-sex couplings, with no romantic strings attached"; "A recent workplace survey found that 32 percent of workers say they have an 'office husband' or 'office wife.'