Hypothesis
Fact: Something that is always the case (ex: The plant has grown)
Hypothesis: Something that is based upon some evidence (If the plants grows in sunlight, then that's the only thing it needs to survive
Law: Something that explains why something happened (The plant grew while in sunlight, so it needs the sun to survive)
Theory: A hypothesis that has been proven through evidence (When I only fed the plant fertilizer, it didn't grow, but when I fed it fertilizer and gave it sunlight, the plant blossomed more and more)