Word or phrase on unnecessary emotional attachments to words, or words that have become degraded in meaning by sentiment,culture, overuse?

I understand that words transform through time, and sometimes end up having multiple or different meanings, but are there phrases or words that describe this. 

I am especially interested how "big" words like peace, love, hate etc... have seem to take on such emotional power that people sometimes fail to understand them in context.

I think emotionally charged words are called loaded language in rhetoric, but as far as both questions go I would like direction to which I can better describe this occurrence. Lead me to something to read or give me a good list of words that classify these phenomenas

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