In general that won't happen, but one can do close readings of presumed valid arguments, and spot cases where equivocation (e.g. bringing in different meanings of a word within different premises) can invalidate a superficially good argument.

Any word with powerful meaning in one context will inevitably be repurposed in other contexts by people who want to borrow some of that power for their own uses.

Here is an example: https://hn.algolia.com/?q=democratize

It is the norm, not the exception, for words to have multiple meanings.