The world collagen is derived from kola, the Greek word for glue. Collagen is found throughout the body-in skin, muscles, tendons, and bones. Fibers of collagen are woven together like threads in fabric to form a framework into which new cells can grow.
UglifyJS is a JavaScript compressor/minifier written in JavaScript. It also contains tools that allow one to automate working with JavaScript code: A parser which produces an abstract syntax tree (AST) from JavaScript code.
Not affording certainty: ambiguous, borderline, chancy, clouded, doubtful, dubious, dubitable, equivocal, indecisive, indeterminate, problematic, problematical, questionable, uncertain, unclear, unsure. Informal: iffy. Idioms: at issue, in doubt, in question.