The noun 'long' is a singular, common noun; a Word for a thing.
The noun 'long' is an abstract noun as a Word for an extended period of time or duration, a position in a securities or commodities market; a Word for a concept.
The noun 'long' is a concrete noun as a Word for a clothing size category for tall people; a Word for a physical thing.
The Word 'long' is also a verb: long, longs, longing, longed.
The Word 'long' is also an adjective: long, longer, longest.
