ADV

considerably, enormously, fundamentally, greatly, markedly, radically, sharply, significantly, substantially, widely
The two approaches differ markedly Opinions differ widely on this issue
little
slightly, somewhat
clearly

PREP

according to
Conditions of employment differ according to the type of company you are working for
between
Social organization differs significantly between the different groups
from
His ideas differ little from those of his father
in
The models differ in size and shape

VERB + DIFFER

agree to
In the end we agreed to differ
beg to
I beg to differ (= I disagree with you)

PREP

about/over
The two sides still differ over details of the plan
on
The two parties differ on all the major issues
with
It didn't seem right that I should differ with him