substitute

In lang=en terms the difference between substitute and spare

is that substitute is to serve as a replacement (for someone or something) while spare is (to give up) to deprive oneself of, as by being frugal; to do without; to dispense with; to give up; to part with.

As verbs the difference between substitute and spare

is that substitute is to use in place of something else, with the same function while spare is to show mercy.

As nouns the difference between substitute and spare

is that substitute is a replacement or stand-in for something that achieves a similar result or purpose while spare is the act of sparing; moderation; restraint.

As an adjective spare is

scanty; not abundant or plentiful.

As nouns the difference between substitute and presentation

is that substitute is a replacement or stand-in for something that achieves a similar result or purpose while presentation is the act of presenting.

As a verb substitute

is to use in place of something else, with the same function.

As verbs the difference between substitute and stead

is that substitute is to use in place of something else, with the same function while stead is to help; to support; to benefit; to assist.

As nouns the difference between substitute and stead

is that substitute is a replacement or stand-in for something that achieves a similar result or purpose while stead is (label) a place, or spot, in general.

As a verb substitute

is to use in place of something else, with the same function.

As a noun substitute

is a replacement or stand-in for something that achieves a similar result or purpose.

As an adjective undefined is

lacking a definition or value.

As verbs the difference between substitute and substituting

is that substitute is to use in place of something else, with the same function while substituting is .

As a noun substitute

is a replacement or stand-in for something that achieves a similar result or purpose.

As verbs the difference between substitute and repace

is that substitute is to use in place of something else, with the same function while repace is to pace again; to walk over again in the opposite direction.

As a noun substitute

is a replacement or stand-in for something that achieves a similar result or purpose.

As nouns the difference between alternatives and substitute

is that alternatives is while substitute is a replacement or stand-in for something that achieves a similar result or purpose.

As a verb substitute is

to use in place of something else, with the same function.

As nouns the difference between standby and substitute

is that standby is state of readiness without being immediately involved while substitute is a replacement or stand-in for something that achieves a similar result or purpose.

As verbs the difference between standby and substitute

is that standby is while substitute is to use in place of something else, with the same function.

As a verb substitute

is to use in place of something else, with the same function.

As a noun substitute

is a replacement or stand-in for something that achieves a similar result or purpose.

As an adjective irreplaceable is

that cannot be replaced.