Here are the matches for the vocabulary words with their definitions:
Prompt 1: Obstacle
Answer for prompt 1: A thing that blocks one's way or prevents or hinders progress.
Prompt 2: Assess
Answer for prompt 2: To evaluate or estimate the nature, ability, or quality of something.
Prompt 3: Innovation
Answer for prompt 3: The process of introducing new ideas, methods, or products that improve or change existing ones.
Prompt 4: Identity
Answer for prompt 4: The qualities, beliefs, personality, looks, and expressions that make a person or group distinctive.