ahead

As adverbs the difference between ahead and later

is that ahead is in or to the front; in advance; onward while later is comparative of late.

As an adjective later is

comparative of late.

As an interjection later is

see you later; goodbye.

As adverbs the difference between away and ahead

is that away is from a place, hence while ahead is in or to the front; in advance; onward.

As an interjection away

is come on!; go on.

As an adjective away

is not here, gone, absent, unavailable, traveling; on vacation.

As an adverb ahead

is in or to the front; in advance; onward.

As a noun axhead is

.

As adverbs the difference between above and ahead

is that above is directly overhead; vertically on top of while ahead is in or to the front; in advance; onward.

As a preposition above

is physically over; on top of; worn on top of, as clothing.

As an adjective above

is of heaven; heavenly.

As a noun above

is heaven.

As adverbs the difference between aheap and ahead

is that aheap is in a heap; huddled together while ahead is in or to the front; in advance; onward.

As a verb aread

is (obsolete) to soothsay, prophesy.

As an adverb ahead is

in or to the front; in advance; onward.