catchment

As nouns the difference between catchment and hatchment

is that catchment is any structure or land feature which catches and holds water while hatchment is (heraldry) an escutcheon of a deceased person, placed within a black lozenge and hung on a wall.

As nouns the difference between taxonomy and catchment

is that taxonomy is the science or the technique used to make a classification while catchment is any structure or land feature which catches and holds water.

Streamchannel is likely misspelled.

Streamchannel has no English definition.

As a noun catchment

is any structure or land feature which catches and holds water.

As nouns the difference between catchment and streamflow

is that catchment is any structure or land feature which catches and holds water while streamflow is the runoff of surface water through a channel.

As a noun catchment

is any structure or land feature which catches and holds water.

As an adjective noncatchment is

not of or pertaining to a catchment.