These two words sound the same in spoken English; however, when written their meanings become obvious and change the meaning of a sentence completely.
Accept is a verb meaning ‘to receive’. Example: Please accept this gift.
Except is usually a preposition meaning ‘excluding’. Example: I like all Japanese food except natto.
**It is worth noting that except can be used as a verb meaning ‘to exclude’. (It is seldom used in this way in everyday English.) Example: Please except that item from the list.