What is a synonym for specialization?

Here are some synonyms for specialization, depending on the context:

General:

* Focus

* Concentration

* Expertise

* Proficiency

* Skill

* Craft

* Field

* Area

* Domain

* Niche

More specific:

* Specialization (formal)

* Specialism (British English)

* Major (academic field)

* Minor (secondary academic field)

* Concentration (academic focus)

* Trade (specialized skill)

* Calling (vocation)

Informal:

* Strong suit

* Forte

* Bag (slang)

The best synonym will depend on the specific situation.