Specialize
Part of speech: verb
Definition: To mention specially; to particularize. To apply to some specialty or limited object; to assign to a specific use; as, specialized knowledge. To supply with an organ or organs having a special function or functions.
Example sentence: BitPay is the leading payment processor for bitcoin. The company specialize in setting up merchant accounts to accept bitcoin payments.
Specialise
Part of speech: verb
Definition: To make distinct or separate, particularly: