Breathtaking isn't a noun at all; it's an adjective. Examples:
Yes, the noun 'excitement' is an abstract noun (also called an idea noun); a word for an emotion.
The noun Christmas is a proper, abstract noun (sometimes called an idea noun); a word for a concept.
The noun 'fear' is an abstract noun; a word for an emotion; a word for a thing.An abstract noun is sometimes referred to as an 'idea noun'.
breathtaking
The noun idea is an abstract noun itself; other examples are thought, concept, or hypothesis.
An idea that is a noun: idea
The possessive noun of "paradise" is "paradise's." For example, you could say "the beauty of paradise's landscapes is breathtaking."
look We looked at the nice scenery.
The possessive form of the singular noun spaceship is spaceship's.example: The spaceship's size was breathtaking.
Hopeful is an adjective, not a noun. The noun form, hopefulness is an abstract noun (if that's what an 'idea noun' means).
The plural of idea is ideas.
Yes, the noun 'excitement' is an abstract noun (also called an idea noun); a word for an emotion.
The noun Christmas is a proper, abstract noun (sometimes called an idea noun); a word for a concept.
Yes, it is a noun.
No, the term 'quirky idea' is two words; quirky is an adjective and idea is a noun.
The word 'idea' is a common noun; the word 'you' is a pronoun.
The noun 'fear' is an abstract noun; a word for an emotion; a word for a thing.An abstract noun is sometimes referred to as an 'idea noun'.