Noun
a noun that denotes a particular thing; usually capitalized
Source: WordNetExceptionally, some end in -ou, indicating the genitive case of this proper noun for patronymic reasons. Source: Internet
Ljubljana: Modrijan, p. 318. As a proper noun, the Slovene form Grast was first attested in 1177, Bezlaj, France (ed.). 1982. Source: Internet
If the second part of the name is derived from a proper noun, e.g. the name of a person or place, a capital letter was used. Source: Internet
In modern usage, the first letter of the first part of the name, the genus, is always capitalized in writing, while that of the second part is not, even when derived from a proper noun such as the name of a person or place. Source: Internet
In proper noun phrases (except personal names), only the first word is capitalized (Pražský hrad, Prague Castle ). Source: Internet
Name and etymology The English proper noun Sun developed from Old English sunne and may be related to south. Source: Internet