Oversaw vs Overseen - What's the difference?

As verbs the difference between overseen and oversaw

is that overseen is past participle of lang=en while oversaw is simple past of oversee.

(head)

(oversee)

(transitive)

(literally) To survey, look at something in a wide angle.

(figuratively) To supervise, guide, review or direct the actions of a person or group.

It is congress's duty to oversee the spending of federal funds.

To inspect, examine

Gamekeepers oversee a hunting ground to see to the wildlife's welfare and look for poachers.

(obsolete) To fail to see; to overlook, ignore.

* , II.ix:

Thereat the Elfe did blush in priuitee, / And turnd his face away; but she the same / Dissembled faire, and faynd to ouersee .