We Deaf people talk, banter, argue, yell, flatter, and all in our language (not "sign" language) -- ASL. We speak ASL.
When describing or talking about sign language, that word "communication" or "communicate" typically appears in phonocentric mentality. The word is cringy. Also, tiresome.
The linguistic regions of the brain function in the same way whether one manually speaks or vocally speaks in any languages. The brain governs the same in language acquisition (milestones and timeline) for both signing and speech. Language is amodal (Petitto), meaning language is independent from modality. Speaking has nothing to do with sound but "live language".
ASL words for "communication"
How do you utter "communication" or "communicate" in American Sign Language (or Ameslan)?
Meaning: To impart (knowledge) or exchange thoughts, feelings, or ideas by speech, signing, writing, drawing, manual/vocal gestures, etc.
Usage examples: "good communication is a huge importance to maintain peace", "clear, open, and honest communication is very important in a relationship".
But, avoid these patronizing statements like "baby sign language helps baby communicate before they can talk", "sign language allows deaf people communicate with one another", and such.