the word underground is a common noun but if used like Underground Railroad then it is proper
No, the compound noun 'underground river' is a common noun, a word for any underground river anywhere. A proper noun is the name of a person, a place, a thing, or a title. The River Fleet is an underground river that runs under London, UK. The River Fleet is a proper noun.
Yes, the noun 'tunnel' is a common noun, a general word for any underground passage.The word tunnel is also a verb: tunnel, tunnels, tunneling, tunneled.
Yes, the noun 'tunnel' is a common noun, a general word for any underground passage.The word tunnel is also a verb: tunnel, tunnels, tunneling, tunneled.
Yes, the noun 'tunnel' is a common noun, a general word for any underground passage.The word tunnel is also a verb: tunnel, tunnels, tunneling, tunneled.
The noun 'cave' is a singular, common, concrete noun; a word for a natural underground chamber or series of chambers open to the surface; a word for a thing. The noun form of the verb to cave is the gerund, caving.
common noun
Yes, it is, meaning underneath the surface. Underground can also be a noun.
Common
Common noun
common
Pea is a common noun, and peas is the plural...still a common noun.