"moves" includes the idea of possible. "reachable" chess positions can only be the result of moves which are only those possible, and any follow-on moves would also only be those that are possible
But if you say a position "has possible moves" (or "available moves") that unambiguously means moves that are possible from that position (i.e., future moves), whereas simply saying that a position "has moves" is ambiguous about whether those moves are in the past or the future.
