Is the word fleet an abstract noun or a common noun?

The noun fleet is a common, concrete noun. A concrete noun is a Word for something that can be experienced by one or more of the five senses, it can be seen, heard, smelled, tasted, or touched. A fleet of cars, a fleet of ships, a fleet of planes can be seen or touched.

An abstract noun is a Word for something that can't be experienced by any of the five senses. An abstract noun is a Word for something that is known, understood, or experienced emotionally.