As nouns the difference between assaulter and rifleman

is that assaulter is one who commits assault while rifleman is a soldier trained to use a rifle as their primary weapon.

As a noun glum

is light.

As an adjective lugubrious is

gloomy, mournful or dismal, especially to an exaggerated degree.

As adjectives the difference between downtrodden and stressed

is that downtrodden is (figuratively) oppressed, persecuted or subjugated while stressed is suffering stress (either physical or mental).

As verbs the difference between downtrodden and stressed

is that downtrodden is while stressed is (stress).

As adjectives the difference between keen and crazy

is that keen is showing a quick and ardent willingness or responsiveness, enthusiastic, eager; interested, intense while crazy is insane; lunatic; demented.

As nouns the difference between keen and crazy

is that keen is a prolonged wail for a deceased person while crazy is an insane or eccentric person; a crackpot.

As a verb keen

is (rare) to sharpen; to make cold or keen can be to utter a keen.

As an adverb crazy is

(slang) very, extremely.

As verbs the difference between deluged and swamped

is that deluged is past tense of deluge while swamped is past tense of swamp.

As an adjective swamped is

very busy; having too much to do.

As verbs the difference between productize and produce

is that productize is to modify something to become suitable as a commercial product while produce is to yield, make or manufacture; to generate.

As a noun produce is

items produced.

As an adjective derivative

is .

As a noun appropriation is

an act or instance of.

As nouns the difference between origin and ingenuity

is that origin is the beginning of something while ingenuity is the ability to solve difficult problems, often in original, clever, and inventive ways.

As a proper noun island

is iceland.

As a noun isthmuses is

.

As a noun carpals

is .

As a proper noun carpi is

a town in the province of modena in emilia-romagna.