As nouns the difference between sclerosis and stenosis

is that sclerosis is (pathology) the abnormal hardening of body tissues, such as an artery while stenosis is (medicine) an abnormal narrowing or stricture in a blood vessel or other tubular organ.

As verbs the difference between conceived and planned

is that conceived is (conceive) while planned is (plan).

As an adjective planned is

existing or designed according to a plan.

As a verb immersing

is .

As an adjective immersive is

tending to immerse.

As nouns the difference between heritage and transmission

is that heritage is an inheritance; property that may be inherited while transmission is the act of transmitting, e.g. data or electric power.

As an adjective liable

is bound or obliged in law or equity; responsible; answerable.

As a noun tendancy is

.

As nouns the difference between teammate and friend

is that teammate is one who is on the same team while friend is a quaker; a member of the.

As a proper noun friend is

.

As a noun center

is centre / center.

As an interjection ok is

.

As adjectives the difference between incidental and extra

is that incidental is loosely associated; existing as a byproduct, tangent, or accident while extra is beyond what is due, usual, expected, or necessary; extraneous; additional; supernumerary.

As nouns the difference between incidental and extra

is that incidental is incidental expense while extra is (cricket) a run scored without the ball having hit the striker's bat - a wide, bye, leg bye or no ball; in australia referred to as a sundry.

As an adverb extra is

(informal) to an extraordinary degree.

As nouns the difference between products and equipment

is that products is plural of lang=en while equipment is the act of equipping, or the state of being equipped, as for a voyage or expedition.

As verbs the difference between happens and happened

is that happens is (happen) while happened is (happen).