Underscore vs Invalidate - What's the difference?

As verbs the difference between underscore and invalidate

is that underscore is to underline; to mark a line beneath text while invalidate is to make invalid especially applied to contract law.

is an underline; a line drawn or printed beneath text; the character.

(en noun)

An underline; a line drawn or printed beneath text; the character .

(music) A piece of background music.

(underscor)

To underline; to mark a line beneath text.

To emphasize or draw attention to.

I wish to underscore the importance of proper formatting.

(en-verb)

To make invalid. Especially applied to contract law.

The circuit court judge's ruling was invalidated by a superior judge.

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