Yes! Proper nouns are CAPITAL and common nouns are not.
No. As a noun, harvest would be considered a common noun.
The word delight would be considered a common noun. Delighted, however, is an adjective.
The word delight would be considered a common noun. Delighted, however, is an adjective.
The word 'book' is a noun; a singular, common, concrete noun, a word for a thing.
Any word you capitalize is considered a proper noun, and all of the others are common nouns, so yes. An example of a proper noun would be Jacob, or Bolivia, or Oreo. Common nouns would be name, or country, or brand.
"God" can be considered a proper noun when referring to a specific deity in a monotheistic religion like Christianity or Islam. In other contexts where "god" is used more generally to refer to a deity in any religion, it would be considered a common noun.
No, it is a plural noun. The common noun would be apple.
"School" is generally considered a common noun unless it is part of a specific school's name, such as "Harvard Business School," in which case it would be a proper noun.
"Highway" is a common noun as it refers to a general type of road used for traveling. However, if it is part of a specific name, such as "Interstate 95" or "Pacific Coast Highway," then it would be considered a proper noun. In general use, without a specific name, it remains a common noun.
The noun 'food' is a common noun described by the proper adjective 'Mexican'. As the compound noun 'Mexican food', it can be considered a common noun, a word for any Mexican food of any kind, or it can be considered a proper noun as a word for the food of a specific national origin.
If it is the name of a specific place or thing such as a newspaper business, it is considered to be a proper noun.
No, "school work" is a common noun. Only specific names, such as "Sunset High School," would be considered proper nouns.