What's the difference between against and from?

Against


Definition:

  • (prep.) Abreast; opposite to; facing; towards; as, against the mouth of a river; -- in this sense often preceded by over.
  • (prep.) From an opposite direction so as to strike or come in contact with; in contact with; upon; as, hail beats against the roof.
  • (prep.) In opposition to, whether the opposition is of sentiment or of action; on the other side; counter to; in contrariety to; hence, adverse to; as, against reason; against law; to run a race against time.
  • (prep.) By of before the time that; in preparation for; so as to be ready for the time when.

Example Sentences:

From


Definition:

  • (prep.) Out of the neighborhood of; lessening or losing proximity to; leaving behind; by reason of; out of; by aid of; -- used whenever departure, setting out, commencement of action, being, state, occurrence, etc., or procedure, emanation, absence, separation, etc., are to be expressed. It is construed with, and indicates, the point of space or time at which the action, state, etc., are regarded as setting out or beginning; also, less frequently, the source, the cause, the occasion, out of which anything proceeds; -- the aritithesis and correlative of to; as, it, is one hundred miles from Boston to Springfield; he took his sword from his side; light proceeds from the sun; separate the coarse wool from the fine; men have all sprung from Adam, and often go from good to bad, and from bad to worse; the merit of an action depends on the principle from which it proceeds; men judge of facts from personal knowledge, or from testimony.

Example Sentences: