A concrete noun is a word for something that can be experienced by any of thefive physical senses; something that can be seen, heard, smelled, tasted, ortouched. Examples: arrow boat car dog egg fence giraffe hamburger ice juice knee lemon manAn abstract noun is a word for something that can't be experienced by any of thefive physical senses; something that is known, learned, thought, understood, orfelt emotionally. Examples:memory need opinion passion quiet retaliation secret trouble understanding valuewonder year.