Does definition of language affect the nature of reality?
Actually, this is a tricky question that requires a lot of thought, because to me language is thought, and without thoughts I'd have no language, so the nature of reality would depend on my perceiving toss of words, subjectively and objectively, with each word as a variable, depending on culture, mother tongue, education, vocabulary-word comprehension, structuring, mechanics, context, stress, characterization, you name it! The magic of language to me, is there is no absolute nature of reality, because it's a cascading matrix of creativity and learning: an experience by experience, whether those feel I'm romanticizing the notion or not. I am a poet that doesn't rely on other's definitions, so what does anyone expect?
Here's ya the Sapir-Whorf hypothesis
along with a few other schools of thought.
Love ya and your question,