What is this infinitive?

[rambharosey]

Can someone please let me know what is this infinitive used as, in the following sentence:

One understanding is to realize that we need to work hard if we want to score well.

What part of speech is the infinitive "to realize" in the above sentence? Adjective, Adverb or Noun?

[5jj]

It is functioning as a noun complement.

[rambharosey]

Means..an adjective..correct?

[5jj]

Means..an adjective..correct?

No. 'noun' does not mean 'adjective'.

[rambharosey]

Sure 5jj, I do understand that a noun does not mean adjective. But you said noun complement, and a Google search on noun complement landed me on this page where most respondents seem to have mentioned that a noun complement can be an adjective (or a noun).

Anyway, in this case, I understand from you that the infinitive "to realize" is a noun.

[5jj]

But you said noun complement, and a Google search on noun complement landed me on this page where most respondents seem to have mentioned that a noun complement can be an adjective (or a noun).

The term 'noun complement' as used by some people can refer to a noun or an adjective,

Anyway, in this case, I understand from you that the infinitive "to realize" is a noun.

I didn't say that. I said it functions as a noun (complement). The infinitive and the gerund are both parts of a verb which can function as nouns.