From the go tag wiki:
Go, also called golang,
From the golang tag wiki:
The term sometimes used for the Go Programming Language
I think these two tags should probably be made actual synonyms or merged as they both seem to be declaring each other as synonyms.
Possibly relevant: There's also somewhat older language called Go! (note the
!). I'm not sure if we have any questions related to that language currently, but wanted to make a note of it in case it's relevant to how these tags are made into synonyms or merged.