We don't have synonyms for common nouns yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are common noun and common counts.
(n) :
A noun that denotes any member, or all members, of a class; an ordinary noun such as dog or city; contrasted with a proper noun, which refers to a single named entity, such as Socrates or Tokyo.
(n) :
A noun that denotes any member, or all members, of a class; an ordinary noun such as dog or city; contrasted with a proper noun, which refers to a single named entity, such as Socrates or Tokyo.