Which of the following definitions of various social variation in language is incorrect?
1. Convergence is a speech style that attempts to reduce social distance, and use forms that are similar to those used by the person we are talking to.
2. A register is a conventional way of using language that is appropriate in a specific context, which may be identified as situational, occupational or topical.
3. Slang describes words or phrases that are used instead of more everyday terms among younger speakers and other groups with special interests.
4. Jargons are words and phrases, often involving body parts, bodily functions and sexual acts, that people avoid for reasons related to religion, politeness and prohibited behavior.