【计】 pair group
right; answer; reply; at; check; compare; couple; mutual; opposite; versus; vs
face to face
【计】 P
【化】 dyad
【医】 Adv.; contra-; corps; ob-; p-; pair; par; para-
【经】 vs
bevy; caboodle; clot; cluster; covey; flock; gang; group; horde; knot; swarm
throng; troop
【医】 group; herd