Last year’s team goal is historical. That cool thing we did today may be historic.
- Historic (adj) “famous or important in history”
- Historical ( adj) “of or concerning history” or “belonging to the past”
The textbook is instructional. Failing the assignment may be instructive.
- Instructive (adj) “something that conveys knowledge, information, a lesson”
- Instructional (adj) “something that is intended to teach”