Late
Part of speech: adverb
Definition: After a deadline has passed, past a designated time.
Part of speech: adjective
Definition: Near the end of a period of time. Specifically, near the end of the day. Associated with the end of a period. Not arriving until after an expected time. Deceased, dead: (Often used with ; see usage notes.) Recent -- relative to the noun it modifies.
Example sentence: Better three hours too soon than a minute too late.
Later
Part of speech: adverb
Definition: After a deadline has passed, past a designated time.Afterward in time (used with than when comparing with another time).At some unspecified time in the future.
Part of speech: interjection
Definition: See you later; goodbye.
Part of speech: adjective
Definition: Near the end of a period of time.Coming afterward in time (used with than when comparing with another time).At some time in the future.
Example sentence: It's great to reminisce about good memories of my past. It was enjoyable when it was today. So learning to enjoy today has two benefits: it gives me happiness right now, and it becomes a good memory later.