Grammar for Geeks: It's vs. Its

It's and its break the rule of "add apostrophe s to make a word possessive." The correct usage of the two words are:

Word Meaning Example
It's Short for It is It's a nice day.
Its Possessive version of "it" Its syn-flooder component works well.

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Last updated: Mon Mar 13 21:58:27 PST 2000