REST over HTTP is HTTP used according to spec, because the REST architectural style involves using the underlying protocol(s) per spec, but only the subset of such protocols that corresponds to REST semantics (but in HTTP’s case, since HTTP/1.1 is itself designed around REST principles and HTTP/2 and HTTP/3 maintain HTTP/1.1 semantics, that’s pretty much the whole spec.)
REST over HTTP is HTTP used according to spec, because the REST architectural style involves using the underlying protocol(s) per spec, but only the subset of such protocols that corresponds to REST semantics (but in HTTP’s case, since HTTP/1.1 is itself designed around REST principles and HTTP/2 and HTTP/3 maintain HTTP/1.1 semantics, that’s pretty much the whole spec.)