George
Xavier
Some proper nouns that begin with G are:GabonGambia, TheGeorgiaGermanyGhanaGreeceGrenadaGuatemalaGuineaGuinea-BissauGuyanaGatoradeGeorge GershwinGlamour MagazineGolden Gate BridgeGone With the WindGoodyear TiresGrand CanyonGrand Rapids, MichiganGreat Barrier ReefGreyhound LinesGuthrie, Woody and Arlo
The proper noun is Jessica, the name of a person. A proper noun always starts with a capital letter.
Some proper nouns that start with the letter G:GameStop CorporationGeorgiaGermanyGertrude SteinGiorgio ArmaniGlenda the Good WitchGolden Gate BridgeGone With the Wind (1939)Grand Canyon (The)GREGORY
David's
Nope. Common noun.
Yes
X-ray
xanadu
Proper nouns.
Yes, "Stefan" is a proper noun because it is a specific name for a person, place, or thing. It always starts with a capital letter.
Some nouns that are ideas (abstract nouns) that start with G are:gaingenerositygentlenessgeometrygleeglorygoodnessgrandeurgreatnessgreedgullibilitygyp