However, if you're asking about the part of speech of a word within a contraction, it depends on the specific contraction. For example:
* "I'm" is a contraction of "I am". "I" is a pronoun and "am" is a verb.
* "Don't" is a contraction of "do not". "Do" is a verb and "not" is an adverb.
* "It's" is a contraction of "it is". "It" is a pronoun and "is" is a verb.
So, to determine the part of speech of a word within a contraction, you need to look at the words that were combined to make the contraction.