Four Aspects (of Buddhist Dharma) == 四法
(1) the teaching
(2) the principle
(3) the practice
(4) the fruit/reward/result
Four Ways (of learning Buddhist Dharma) == 四法
(1) Belief/faith
(2) Interpretation/discernment
(3) Practice/performance
(4) Verification/assurance
These are the cyclic process in learning a truth.
Four Seals == 四法印
They are:
1.All phenomena are impermanent.
2.All Dharma are not-self.
3.The eternity is Nirvana.
4.All sensations are suffering.