What part of speech is the word second?

The word "second" can be several parts of speech depending on its context:

* Adjective: Describing something that comes after the first in order or importance (e.g., "the second chapter").

* Noun: A unit of time equal to one sixtieth of a minute (e.g., "wait a second").

* Verb: To support or back up someone or something (e.g., "He seconded the motion").

* Adverb: Meaning "in addition" or "also" (e.g., "Second, I want to thank you for your help").

To determine the correct part of speech, look at how the word is used in the sentence.