Atheists, the difference between conjecture, hypothesis and theory, if you please?

conjecture A conjecture is a proposition that is unproven but is believed to be true and has not been disproven.hypothesis A hypothesis (from Greek ὑπόθεσις; plural hypotheses) is a proposed explanation for a phenomenon. The term derives from the Greek, ὑποτιθέναι – hypotithenai meaning "to put under" or "to suppose." For a hypothesis to be put forward as a scientific hypothesis, the scientific method requires that one can test it.theory Originally the word theory is a technical term from Ancient Greek. It is derived from theoria, θεωρία, meaning "a looking at, viewing, beholding", and refers to contemplation or speculation, as opposed to action.[1] Theory is especially often contrasted to "practice" (Greek praxis, πρᾶξις) an Aristotelian concept which is used in a broad way to refer to any thing done for the sake of any action, in contrast with theory, which is not. "Theoria" is also a word still used in theological contexts.