* Teagasc (TY-gusk): This is the most common and general word for "teaching" as an activity or the act of teaching. It's often used as a noun, meaning "teaching" or "instruction".
* Teagaisc (TY-gusk): This is the noun form of the word and means "teaching" or "instruction".
* Oideachas (IH-duh-chus): This word means "education" and could be used in contexts where "teach" refers to the broader system or process of education.
* A mhúineadh (a-vin-uh): This is the verbal noun of the verb "to teach" (múineadh). It's used in phrases like "bíonn sé ag múineadh" (he is teaching).
Therefore, the best translation depends on the sentence. If you can provide the sentence you want to translate, I can give you a more accurate translation.