An archetype is a universally understood symbol or character type that recurs across different cultures and stories (e.g., the hero, the mentor). It is a fundamental part of storytelling. A stereotype, however, is a socially constructed, oversimplified, and often pejorative generalisation about a specific social group (e.g., based on class, gender, or ethnicity). While an archetype is a narrative tool, a stereotype is an ideological tool that can reinforce prejudice and social inequality. A 'wise old man' is an archetype; portraying all elderly people as frail and confused is a stereotype.