Yes, the word life is a noun, a singular, common noun, abstract noun.
An 'idea noun' is an abstract noun, a word for something that can't be experienced by any of the five senses, it can't be seen, heard, smelled, tasted, or touched. The life of someone or something is a thing that is known or understood, an 'idea'.
Protection Because the noun "protection" denotes an idea rather than a specific object that protects, it is considered an abstract noun.
An idea that is a noun: idea
"Blog" is typically considered an abstract noun because it represents a concept or idea rather than a physical object.
Reunion can be considered an abstract noun because it represents a concept or idea of coming together or reuniting with someone or something.
"In" would not be considered a pronoun. A pronoun takes place for a noun; person, place, thing or idea. "In" is a preposition which relates a noun for something else.
Energy can be considered an abstract noun because it represents a concept or idea rather than a tangible object that can be seen or touched.
The noun 'nation' is a concrete noun as a word for a group of people or a physical place.
The noun 'autobiography' is an abstract noun as a word for a type of literature. The noun 'autobiography' is a concrete noun as a word for a physical manuscript or book.
Hopeful is an adjective, not a noun. The noun form, hopefulness is an abstract noun (if that's what an 'idea noun' means).
Yes, "evil" is considered a common noun because it refers to a general concept or idea rather than a specific person, place, or thing.
The plural of idea is ideas.
Yes, the noun 'excitement' is an abstract noun (also called an idea noun); a word for an emotion.