What is the difference between inductive an deductive method?

Deductive reasoning is sometimes referred to as a "top down" approach, in other Words deductive reasoning works from the more general to the more specific. It often starts with a theory and is then narrowed down to an actual, testable hypothesis, that can be confirmed or denied by observation.

Inductive reasoning is the inverse approach, a "bottom up" approach. It begins with an observation and through observation patterns and regularities are observed and can be applied to a more generalized theory.