Is discovery an abstract noun or a concrete noun?

Answer 1

The word 'known' can be an abstract noun, but it is usually not used as a noun.

The word 'known' is the past participle of the verb 'to know' (knows, knowing, knew, known); the past participle of the verb is also an adjective (known universe, well known author).

The nouns "known" and "unknown" are abstract, as is the noun form "knowledge." They refer to facts or other things that are or are not known.

e.g. The only known in the situation is the cost. / There are many unknowns when dealing with astrophysics.

Answer 2

Yes, the noun 'discovery' is an abstract noun as a word for the act of finding out or ascertaining something previously unknown or unrecognized; a word for a concept.

The noun 'discovery' is a concrete noun as a word for something physical that was previously unknown or unrecognized; a word for a physical thing.

Answer 3

The word discovered is a verb or adjective, not a noun. The noun discovery is an abstract noun.

Answer 4

Reached is the past tense of the verb to reach.

Answer 5

Decided is not a noun. It's a verb (past tense of decide).

The noun form is decision, an abstract noun.

Answer 6

The noun 'discovery' is an abstract noun, a word for recognizing and understanding something; a word for a concept.

Answer 7

Yes