Empiricists think that we should rely on our senses as a source of information but they also agree that using induction, and therefore reason as well, to make conclusions are reliable, whereas irrationalists think we can't use reason to make conclusions. 

Empiricism: experience/senses vs reason
Irrationalism: reason vs intuition/feeling...

I know that empiricism and irrationalism aren't direct opposites of each other. Nonetheless, is my understanding of the differences between these two epistemological approaches correct?