particularize

To make particular, as opposed to general; to restrict to a specific or individual case, class etc.; to single out.

To be specific about (individual instances); to go into detail (about), to specify.

'Tis hard I confesse, yet I have disposed of them as I could, and will descend to particularize them according to their species.

Twice we find him, not only boasting of his Parentage, as an Israelite at large, but particularizing his Descent from the Tribe of Benjamin.

To differentiate, make distinct from others.