Definitions for "Lexical category"
a class of words that all share similar morphological and syntactic properties -- that is, words that may appear in the same morphological and syntactic frames
a syntactic category for elements that are part of the lexicon of a language
The Lexical category is made up of substantive Nouns/Verbs/Adjectives/Adverb s. This category is void of any Functional Inflection.