The difference between As a rule and By and large
When used as adverbs, as a rule means in general, whereas by and large means mostly, generally.
check bellow for the other definitions of As a rule and By and large
-
As a rule as an adverb (idiomatic):
In general; most often.
Examples:
"We go fishing every Sunday as a rule, but today the lake is frozen."
-
By and large as an adverb (set phrase, focus):
mostly, generally; with few exceptions
Examples:
"It was, by and large, an unexceptional presentation."