When the same word is used to mean very different things, it causes confusion. The word, “science,” is used for knowledge gained by repeated experimentation and observation by many people, but it’s also used for the unsupported assertions of a group of politically elite scientists.
The word, “evidence,” is used for absolute and certain proof, but it’s also used for interpretations based on unsupported assertions, on made-up stuff.
The word, “faith,” is used for the absolute proof and certainty that comes when God speaks, but it’s also used for a belief based on unsupported assertions. The word, “hope,” is used for the vision God gives concerning what He has promised He will do, but it’s also used for a human-generated wish based on vapor.
The phrase, “I’m a Christian,” is used to mean, “Jesus Christ leads me and teaches me moment by moment and does His Works through me,” but it’s also used to mean, “I know that Jesus Christ exists.”
These are just a few examples, but the list could go on and on. The result is that statements need clarification. Words must be defined.