What part of speech is faster?

"Faster" can be a few different parts of speech, depending on how it's used in a sentence:

* Adjective: Describing something that moves or happens quickly. Example: "The cheetah is a faster runner than the lion."

* Adverb: Modifying a verb, adjective, or another adverb, indicating a greater speed or degree. Example: "She ran faster than ever before."

* Comparative Adjective: Comparing two things in terms of speed. Example: "The blue car is faster than the red one."

So, the part of speech for "faster" depends on its function in the sentence.