What part of speech is the word instruction?

The word "instruction" can be several parts of speech depending on its use in a sentence:

* Noun: This is the most common use. "I followed the instructions carefully."

* Adjective: "The instruction manual was very helpful."

* Verb: This is less common, but it can mean "to instruct." "The teacher instructed the students on the new lesson."

Let me know if you have a specific sentence in mind, and I can help you determine the part of speech!