As nouns the difference between turbidity and opalescence

is that turbidity is the state of being turbid; turbidness while opalescence is the state of being opalescent.

As nouns the difference between copyleft and patent

is that copyleft is the philosophy of using copyrights to enforce freedom of information, especially software source code while patent is .

As a verb copyleft

is to license under a copyleft license.

As adjectives the difference between yiffier and niffier

is that yiffier is (yiffy) while niffier is (niffy).

As verbs the difference between streamed and screamed

is that streamed is (stream) while screamed is (scream).

As an adjective streamed

is (uk|education) divided into academic streams.

As verbs the difference between funnelling and runnelling

is that funnelling is (us) while runnelling is .

As verbs the difference between underdoing and underdosing

is that underdoing is while underdosing is .

As nouns the difference between winnower and minnower

is that winnower is a person who winnows while minnower is (fishing) a fisherman who minnows.

As nouns the difference between mouldboards and moldboards

is that mouldboards is while moldboards is .

As nouns the difference between typography and topography

is that typography is the art or practice of setting and arranging type; typesetting while topography is a precise description of a place.

As nouns the difference between mattrass and matrass

is that mattrass is while matrass is (obsolete) a bolt for a crossbow.