① Inductive reasoning is a conclusion we come up by oberservation or patterns.

Deductive reasoning is get the conclusion by using true statement with logical process.

The difference is Deductive reasoning using logical thinking while Inductive reasoning using oberservation.

② Conjecture is the conclusion come up by Inductive reasoning.

Theorem is the conclusion come up by logical thinking or deductive reasoning.

The difference is theorem can’t be proved by Inductive reasoning but conjecture can be proved by Inductive reasoning.

③ An Inductive proof is a conjecture which may or may not be true.

An deductive reasoning proof is a theorem which is always true.