The difference between Ahead and Before
When used as adverbs, ahead means in or to the front, whereas before means at an earlier time.
Before is also conjunction with the meaning: in advance of the time when.
Before is also preposition with the meaning: earlier than (in time).
check bellow for the other definitions of Ahead and Before
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Ahead as an adverb:
In or to the front; in advance; onward.
Examples:
"The island was directly [[ahead]]."
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Ahead as an adverb:
In the direction one is facing or moving.
Examples:
"Just ahead you can see the cliffs."
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Ahead as an adverb:
In or for the future.
Examples:
"There may be tough times ahead."
"You've got to think ahead so as not to be unprepared."
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Ahead as an adverb:
At an earlier time.
Examples:
"He paid his rent ahead."
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Ahead as an adverb:
Having progressed more.
Examples:
"In all of his classes Jack was ahead."
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Before as a preposition:
Earlier than (in time).
Examples:
"I want this done before Monday."
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Before as a preposition:
In front of in space.
Examples:
"He stood before me."
"We sat before the fire to warm ourselves."
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Before as a preposition:
In the presence of.
Examples:
"He performed before the troops in North Africa."
"He spoke before a joint session of Congress."
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Before as a preposition:
Under consideration, judgment, authority of (someone).
Examples:
"The case laid before the panel aroused nothing but ridicule."
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Before as a preposition:
In store for, in the future of (someone).
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Before as a preposition:
In front of, according to a formal system of ordering items.
Examples:
"In alphabetical order, "cat" comes before "dog", "canine" before feline"."
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Before as a preposition:
At a higher or greater position than, in a ranking.
Examples:
"An entrepreneur puts market share and profit before quality, an amateur intrinsic qualities before economical considerations."
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Before as an adverb:
At an earlier time.
Examples:
"I've never done this before."
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Before as an adverb:
In advance.
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Before as an adverb:
At the front end.