Culture is learned, acted out, transmitted, and preserved through communication.
Words do not really possess meaning. It is more accurate to say that people possess meaning and that words elicit these meanings. What the word 'dog' means to you may be very different from what it means to me, for example, or perhaps only slightly different. It identifies the possible components, functions, and contexts of speech acts in a given speech community or society, as well as similarly delineating named speech events and speech situations in that community. A group of people who interact by means of speech.