Future
Part of speech: noun
Definition: The time ahead; those moments yet to be experienced. Something that will happen in moments yet to come. (grammatical terminology): verb tense used to talk about events that will happen in the future. future tense (plural) Commodities or stocks bought or sold with the understanding that they will be delivered at a date beyond the current one.
Part of speech: adjective
Definition: Having to do with or occurring in the future.
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: Preparation for old age should begin not later than one's teens. A life which is empty of purpose until 65 will not suddenly become filled on retirement.