Its interesting how the usage of language changes and whose meanings sometimes fall away.
1. Consequence - often associated with negative actions but can refer to something that results from an action. Such as-
As a consequence of doing well on the test, she earned a scholarship. This meaning is not used as much as the consequence of his choosing to drive while drunk was being arrested by the police.
2. Provocative - sometimes associated with something sexual, yet it can refer to an idea that stimulates your interest. There is a chewing gum commercial that is very provocative or intriguing with a connection to dirt and teeth.
3. Intercourse - Aside from being the name of a town in Pennsylvania, it is often used in a sexual connection yet it used to mean a conversation.
My favorite right now is transparent. The term transparent is now used to indicate that we should be open so people can see what we are doing. I remember when people said they were being open. On the other hand rather than increasing business, you grow your business. When every I hear someone talk about growing business, I picture a giant watering and fertilizing a building to make it bigger.
I once knew a teacher who said that we really speak two versions of English, written and spoken. I think I'd add a third to that with the development of text talk. What do you think?