收， 收取信件，收取礼物，收获（将某物收下） 受 （受到某物/事的影响) 受难，受刑， 受到某人的赞扬

收 is a physical action that means "receive", like 收信 (receive mail) or 收钱 (receive money) 受 is a non physical action that also means "receive" but in a sense that the person is receiving something unseen. It also means "to bear". 受害 （receive damage or bear damage) is a good example.