I’m not sure if there is a word that has this definition. If there isn’t perhaps we can come up with one.
The definition is this:
The false presumption that two opposing ideas, arguments or concepts are actually equal, based on the fact that the words being used to describe those ideas, are the same.
For example:
We have no direct evidence the god exists but all around us we see evidence that supports his existence and many people believe he exists on that basis.
and
We have no direct evidence that dark matter exists, but all around the universe there is evidence to support it’s existence and many scientists chose to believe in the theory even though it is unproven (facts only existing in the absence of falsifying evidence notwithstanding 😉 )
ergo
Science and religion are the same thing
or
Science is no more reliable a way of describing the universe than religion
or
Science is based on faith just as much as religion is.
Of course those conclusions are complete nonsense, hence the definition being the false presumption.