Why arbitrarily invent new meanings (for microservices) and new words (microlibraries) when there are already many adequate ways to describe modular, componenti

Why arbitrarily invent new meanings (for microservices) and new words (microlibraries) when there are already many adequate ways to describe modular, componentized architecures? A totally valid and important point but it has been diluted by talking about microservices rather than importance of modular architectures for agent-based coding.