What part of speech is early?

"Early" can be multiple parts of speech depending on its use in a sentence:

* Adjective: Describing a noun, e.g., "He arrived early."

* Adverb: Modifying a verb, adjective, or another adverb, e.g., "They woke up early."

* Noun: Referring to the early part of something, e.g., "They lived through the early days of the war."

Let me know the sentence you have in mind, and I can tell you the specific part of speech for "early" in that context.