Is COMMS a Wordle Word?

Yes. COMMS is a valid Wordle word.

It is not on the Wordle answer list, so it is unlikely to be a daily answer.

Plurals ending in S are almost never chosen as Wordle answers.

What does COMMS mean?

The act or fact of communicating anything; transmission.“communication of a secret”
The concept or state of exchanging data or information between entities.“Some say that communication is a necessary prerequisite for sentience; others say that it is a result thereof.”
A message; the essential data transferred in an act of communication.“Surveillance was accomplished by means of intercepting the spies' communications.”

7 more noun definitions

The body of all data transferred to one or both parties during an act of communication.“The subpoena required that the company document their communication with the plaintiff.”
An instance of information transfer; a conversation or discourse.“The professors' communications consisted of lively discussions via email.”
A passageway or opening between two locations; connection.“A round archway at the far end of the hallway provided communication to the main chamber.”
A connection between two tissues, organs, or cavities.
Association; company.
Participation in Holy Communion.
A trope by which a speaker assumes that his hearer is a partner in his sentiments, and says "we" instead of "I" or "you".

Definition from Wiktionary, available under the CC BY-SA license.

Starter word rating: WeakIn the top 90% of all valid Wordle words for testing common letters.
Vowels: O
Unique letters: 4 of 5Repeats M
Common letters: O

Hard-mode trap: 6 valid words fit the pattern COM_S. If you reach it, you may need several guesses to find the last letter.

Letter ratings use how often each letter appears in Wordle answers.

Tap its tiles to the colours Wordle showed, and the Wordle Solver lists every word that still fits, with the best next guess.