Lost can be a verb or an adjective. It is not a noun.
In the sentence, "The boy lost his present.", the noun 'present' is a concrete noun; a word for a gift; a word for a physical thing.The noun 'present' is an abstract noun as a word for the current period of time; a word for time is a word for a concept. (It's not likely that the sentence means that the boy lost his now.)
The noun form of "lost" is "loss."
Microphone is a common noun.
"Whales" is a common noun.
The common noun for the proper noun "Linda" is "woman" or "person."
"Report" is a common noun if used like:"Hey Bob, what did you do your report on?"It is not a Common Noun if used as a title such as:"The Russian Report" or "Report of Lost Boy."
The common nouns in the sentence are necklace and overcoat.
In the sentence, "The boy lost his present.", the noun 'present' is a concrete noun; a word for a gift; a word for a physical thing.The noun 'present' is an abstract noun as a word for the current period of time; a word for time is a word for a concept. (It's not likely that the sentence means that the boy lost his now.)
The word 'casualty' is a noun, a singular, common, abstract noun; a word for anything that is lost, damaged, or destroyed as a result of an accident; a person injured or killed in an accident; a military person lost during warfare.
Common noun
common
Pea is a common noun, and peas is the plural...still a common noun.
A common noun.
Most definitely a common noun.
The noun form of "lost" is "loss."
Camel is a common noun.
Th word tail is a common noun because the first letter of a proper noun is capitalized.