As nouns the difference between sputum and spitoon

is that sputum is (physiology) matter coughed up and expectorated from the mouth, composed of saliva and discharges from the respiratory passages such as mucus, phlegm or pus while spitoon is .

As an adverb cat

is how much.

As an adjective cat

is how much.

As a verb soup is

or soup can be (uncommon) to feed: to provide with soup or a meal.

As a noun soup is

or soup can be any of various dishes commonly made by combining liquids, such as water or stock with other ingredients, such as meat and vegetables, that contribute flavor and texture.

As verbs the difference between stemming and lemmatizing

is that stemming is while lemmatizing is .

As a noun stemming

is (nautical) movement against a current, especially a tidal current.

As an interjection gesundheit

is (north america) said to someone who has just sneezed.

As a noun godspeed is

(godspeed).

As nouns the difference between tree and boom

is that tree is a large plant, not exactly defined, but typically over four meters in height, a single trunk which grows in girth with age and branches (which also grow in circumference with age) while boom is .

As a verb tree

is to chase (an animal or person) up a tree.

As an adjective pompous

is affectedly grand, solemn or self-important.

As a proper noun Pompeii is

a ruined Roman town in Italy, destroyed by Vesuvius (a volcano) in 79AD.

As a proper noun grass

is .

As a noun marijuana is

drug smoked or ingested for euphoric effect, .

As adjectives the difference between arbitrary and fixed

is that arbitrary is based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random while fixed is not changing, not able to be changed, staying the same.

As a noun arbitrary

is anything arbitrary, such as an arithmetical value or a fee.

As a verb fixed is

past tense of fix.

As nouns the difference between roaster and fryer

is that roaster is one who roasts food while fryer is a container for frying food.

As nouns the difference between jealousy and greed

is that jealousy is a state of suspicious guarding towards a spouse, lover etc., from fears of infidelity while greed is a selfish or excessive desire for more than is needed or deserved, especially of money, wealth, food, or other possessions.