"经(jīng)历(lì)" can be both verb and noun. The noun "经(jīng)历(lì)"(Experience) is the collection of the activities such as the people you have met, the competitions you have joint, the places you have traveled. For example:
Go abroad traveling is interesting experience.
Traveling abroad is an interesting experience.
经(jīng)验(yàn) can be both noun and adjective, it is an ability resulted from a large amount of practice. For example,
She is a possesses thirty years teaching experiences teacher.
She is a teacher possesses thirty years teaching experiences