As nouns the difference between seepage and spillway
is that seepage is the process by which a liquid leaks through a porous substance; the process of seeping while spillway is a path designed to take away overflow safely.
seepage
English
Noun
(
en noun)
the process by which a liquid leaks through a porous substance; the process of seeping
water that seeped or oozed through a porous soil
See also
* seepage bed
spillway
English
Noun
(
en noun)
A path designed to take away overflow safely.