Positive adoption language

I'm not usually one to be overly concerned with being politically correct, but there are some things I am a stickler about. Using positive adoption language is one of them. I think using terms like 'gave up' and 'real mom' are very damaging to the child, and I can't stand it when people use terms like that. But I'm not very confrontational and I hate to correct people all the time and seem oversensitive. I am always very careful to use positive language and have hoped that people would pick up on it and mirror me, but it's not happening. What are some ways to gently explain the importance of positive adoption language?