All languages have words. Language emerges first as words, both historically, and in terms of the way each of us learned our first and any subsequent languages. The coining of new words never stops nor does the acquisition of words. Even, in our first language we are continually learning new words, and learning new meanings for old words. Without grammar very little can be conveyed, without vocabulary nothing can be conveyed. If you spend most of your time studying grammar, your English will not improve very much. You will see most improvement if you learn more words and expressions. You can say very little with grammar, but you can say almost anything with words!