set of forms: walk, walks, walking, walked?How many words are there??I usually have dinner at 6 but yesterday I had it at seven.?How many times did the word “have” occur?РGeneral term and specific termРWord may be used both as a general term and as specific items.?In a general term: “have” and “had” are just one word.?In a specific items: “have” and “had” are two words.РA lexical item is an entry in a dictionary.?A lexeme includes all of its grammatical forms:?write, writes, writing, wrote, writtenРA grammatical unit: Word presents itself as a grammatical unit in a lexico-grammatical system. ? ? sentence? clause? phrase? word? morphemeРA grammatical unitРMorphologyРThe part of the grammar that is concerned with word formation and word structure.РLexicology?Semantics?Etymology?Lexicography