These are winged reproductive termites (swarmers). Subterranean termite alates are day swarmers. After swarming, these termites drop their wings and look for a nesting site. Swarms usually occur in the morning after a warm rain.
These termites can be differentiated from adult winged ants that have elbowed antennae, constricted waists, forewings are larger than the rear wings (unequal size), and not easily detached
Carpenter ants have humped backs, are about ½ inch long and are black with gray, yellow or red hairs on their body and legs. As these ants are commonly misidentified, consult your local university entomologist or Cooperative Extension Service agent if you are unsure whether carpenter ants are infesting your home and yard.