What is a Abstract Noun?

Typically nouns are persons, places or things that can been seen with the eyes or felt with the hands. Abstract nouns are not tangible, they are ideas, concepts or feelings.Look at the following sentence. ‘Bjork has great taste in clothes.’ Ignoring the obvious ridiculous notion that this is even remotely true, the word ‘taste’ is a noun, but it is not the traditional tangible noun, it is an abstract noun.