specialization

A particular subject or activity that someone studies closely and becomes very good at.

• Her specialization is children's medicine.
• Students choose a specialization in their final year.
• The job requires specialization in computer security.

How to use it: specialization in something (Her specialization in heart surgery took years.)

Similar words: specialty, speciality, specialism

Common phrases: medical specialization, area of specialization, specialization in something

A more limited case of a general idea, rule, or mathematical problem.

• This theorem is a specialization of a broader result.
• Each specialization covers fewer cases.
• A square is a specialization of a rectangle.

How to use it: specialization of something (This formula is a specialization of the general rule.)

Similar words: special case

Common phrases: specialization of something, particular specialization