napsack

As nouns the difference between terms and napsack

is that terms is while napsack is .

As a noun napsack

is .

As an adjective undefined is

lacking a definition or value.

As nouns the difference between napsack and backpack

is that napsack is while backpack is a knapsack, sometimes mounted on a light frame, but always supported by straps, worn on a person’s back for the purpose of carrying things, especially when hiking]], or on a student's back when [[carry|carrying books.

As a verb backpack is

to hike and camp overnight in backcountry with one's gear carried in a backpack.

As nouns the difference between napsack and snapsack

is that napsack is while snapsack is (obsolete) a knapsack.

As nouns the difference between knapsack and napsack

is that knapsack is a case of canvas or leather, for carrying items on the back while napsack is misspelling of knapsack.

As a verb knapsack

is to go hiking while burdened with a knapsack, usually overnight (or longer..