This is a common argument, and it is a form of argument by dictionary definition, which are seldom informative, and most often used to avoid the issues.
While individual scientists may hold beliefs that go beyond scientific premises, the significant difference between scientific and religious belief is that in the former case, all axioms are considered to be defeasible - and they quite often are overthrown.
The foundational axioms of scientific practice are generally not considered to be defeasible at all. The axioms of any particular theory or field may also be considered entirely beyond reproach.
This is also not a semantic argument at all. It is strictly a logical one.
While individual scientists may hold beliefs that go beyond scientific premises, the significant difference between scientific and religious belief is that in the former case, all axioms are considered to be defeasible - and they quite often are overthrown.