Answer:
Knowledge- Verb
Heroism- Common noun
Truth- Common noun
Life- Verb
Coldness- Adjective
Captaincy- Common noun
Step-by-step explanation:
According to the Help Box, the suitable root words for the abstract nouns have been out in their appropriate columns.
*A noun is a naming word that provides the name of a person, animal, place, thing, etc.
An adjective describes or modifies a noun or adverb in a sentence.
A verb is an action word.