Similarity

The Simple English Wiktionary has a definition for: similarity.

Similarity can mean:

In mathematics:

• Similarity (geometry), when a shape looks the same as another shape, but has a different size or rotation
• Matrix similarity, a relation between matrices

In computer science:

• String metric, or string similarity
• Semantic similarity in computational linguistics

In other fields:

• In psychology, similarity (psychology)
• In music, musical similarity
• In chemistry, chemical similarity