Is the noun appear an abstract noun?

The word "appear" is a verb, not a noun. Therefore, it cannot be classified as an abstract noun.

Abstract nouns refer to concepts, qualities, or ideas that cannot be touched or physically experienced. Examples include:

* Happiness

* Love

* Freedom

* Justice

The word "appear" describes an action or a state of being.

If you are looking for an abstract noun related to the idea of appearing, you might consider:

* Appearance

* Visibility

* Presence

* Existence