Specializes vs Specialties - What's the difference?

As a verb specializes

is (specialize).

(head)

(specialize)

* specialise (non-Oxford British spelling)

(specializ)

To mention specially; to particularize.

To apply to some specialty or limited object; to assign to a specific use; as, specialized knowledge.

(biology) To supply with an organ or organs having a special function or functions.

* generalize

* specialty, speciality * specialist * subspecialize * subspecialty, subspeciality * subspecialist * specialisation, specialization