a noun is a word that is used to name people, animals, places, things, or concepts. In this sense, the noun form of 'tonight' means a single evening or night occurring between this evening and dawn of the following day.
As a noun, the word 'tonight' is used to talk about specific time periods.
1. We're having a party tonight.
2. We'll meet up again tonight.
as a noun, 'tonight' is usually used in the context of an evening or night that is yet to come. In rare cases, it can be used to refer to a night that is already over.
an adverb is a word used to modify or describe a verb, an adjective, another adverb, clause, phrase, or sentence. In this sense, the adverb form of 'tonight' means the same evening or night.
As an adverb, 'tonight' is used to describe a particular evening or night.
1. We plan to leave tonight.
2. I will see him tonight.
3. She will return home tonight.
As an adverb, 'tonight' is primarily used to talk about a particular evening or night that is yet to come. It can also be used to refer to a night that is already past.