Difference between Grown and Grownup

Grown

Part of speech: verb

Definition: To become larger, to increase in magnitude.

Part of speech: adjective

Definition: Covered by growth; overgrown.

Example sentence: We are in a far better position to observe instincts in animals or in primitives than in ourselves. This is due to the fact that we have grown accustomed to scrutinizing our own actions and to seeking rational explanations for them.

Grownup

Part of speech: adjective

Definition: Of, pertaining to, or suitable for adults.Adult; fully developed; mature.

Part of speech: noun

Definition: An adult.