Competitive enzyme inhibition- the inhibitor compound is a similar structure to the enzyme’s active site. This means it can fit into the active site of the enzyme, via the glove induced fit, method creating a inhibitor-enzyme-complex. These interactions are reversible so normal enzymatic function occurs at a slower rate.
Non-competitive inhibition- a inhibitor compound binds to an enzyme’s allosteric site via covalent bonds. This process is irreversible. Binding here denatures the enzymes active site so the enzyme cannot function normally.