The difference between Aid and Sustain

When used as nouns, aid means help, whereas sustain means a mechanism which can be used to hold a note, as the right pedal on a piano.

When used as verbs, aid means to (give) support (to), whereas sustain means to maintain, or keep in existence.

check bellow for the other definitions of Aid and Sustain

  1. Aid as a noun (uncountable):

    Help; assistance; succor, relief.

    Examples:

    "He came to my aid when I was foundering."

  2. Aid as a noun (countable):

    A helper; an assistant.

  3. Aid as a noun (countable):

    Something which helps; a material source of help.

    Examples:

    "Slimming aids include dietary supplements and appetite suppressants."

  4. Aid as a noun (countable, British):

    An historical subsidy granted to the crown by Parliament for an extraordinary purpose, such as a war effort.

  5. Aid as a noun (countable, British):

    An exchequer loan.

  6. Aid as a noun (countable, legal):

    A pecuniary tribute paid by a vassal to his feudal lord on special occasions.

  7. Aid as a noun (countable):

    An aide-de-camp, so called by abbreviation.

    Examples:

    "The incompetent general's brilliant aid often made priceless suggestions."

  1. Aid as a verb (transitive):

    To (give) support (to); to further the progress of; to help; to assist.

  1. Sustain as a verb (transitive):

    To maintain, or keep in existence.

    Examples:

    "The professor had trouble sustaining students’ interest until the end of her lectures."

    "The city came under sustained attack by enemy forces."

  2. Sustain as a verb (transitive):

    To provide for or nourish.

    Examples:

    "provisions to sustain an army"

  3. Sustain as a verb (transitive):

    To encourage (something).

  4. Sustain as a verb (transitive):

    To experience or suffer (an injury, etc.).

    Examples:

    "The building sustained major damage in the earthquake."

  5. Sustain as a verb (transitive):

    To confirm, prove, or corroborate; to uphold.

    Examples:

    "to sustain a charge, an accusation, or a proposition"

  6. Sustain as a verb:

    To keep from falling; to bear; to uphold; to support.

    Examples:

    "A foundation sustains the superstructure; an animal sustains a load; a rope sustains a weight."

  7. Sustain as a verb:

    To aid, comfort, or relieve; to vindicate.

  1. Sustain as a noun (music):

    A mechanism which can be used to hold a note, as the right pedal on a piano.

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