I wonder if telepathy would help with that.

That would depend partly on the specific problems with the words, and partly on the rationality of the people.

If everyone is making the same mistake, telepathy will just amplify the problem. There will be a chorus of agreement which is amplifying the mistake.

If people are using the wrong word, but with different shadings, then perhaps people will look into how well the word fits the concept it is supposed to indicate. However, the odds favor people yelling at each other about who's right.