Pouring has 3 different meanings across 1 category:
Adjective
The act by which something is poured.
"The pouring of the milk into the coffee happened so quickly that I missed seeing where it landed."
present participle of pour
"The rain was pouring down so hard that we couldn't see the street in front of us."
flowing profusely
"a gushing hydrant"
"pouring flood waters"