As verbs the difference between confirm and certificate

is that confirm is to strengthen; to make firm or resolute while certificate is to supply with a certificate, especially following certification.

As a noun certificate is

a document containing a certified statement.

As verbs the difference between impart and instil

is that impart is to give a part or share while instil is an alternative spelling of lang=en.

In transitive terms the difference between fathom and think

is that fathom is to measure the depth of, take a sounding of while think is to consider, judge, regard, or look upon (something) as.

As nouns the difference between fathom and think

is that fathom is grasp, envelopment, control while think is an act of thinking; consideration (of something).

As verbs the difference between fathom and think

is that fathom is to encircle with outstretched arms, especially to take a measurement; to embrace while think is to ponder, to go over in one's head.

In lang=en terms the difference between warp and contort

is that warp is to travel across a medium without passing through it normally, as by using a teleporter or time warp while contort is to twist into or as if into a strained shape or expression.

As verbs the difference between warp and contort

is that warp is (transitive|obsolete|outside|dialects) to throw; cast; toss; hurl; fling while contort is to twist in a violent manner; as, features contorted with fury.

As a noun warp

is (obsolete) a throw; a cast.

As verbs the difference between contract and different

is that contract is (ambitransitive) to draw together or nearer; to shorten, narrow, or lessen while different is .

As a noun contract

is an agreement between two or more parties, to perform a specific job or work order, often temporary or of fixed duration and usually governed by a written agreement.

As an adjective contract

is (obsolete) contracted; affianced; betrothed.

As nouns the difference between susceptible and doubt

is that susceptible is (epidemiology) a person who is vulnerable to being infected by a certain disease while doubt is uncertainty, disbelief.

As an adjective susceptible

is likely to be affected by something.

As a verb doubt is

(ambitransitive) to lack confidence in; to disbelieve, question, or suspect.

As nouns the difference between scientists and naturalist

is that scientists is while naturalist is (dated) a person committed to studying nature or natural history.

As a noun aspect

is the way something appears when viewed from a certain direction or perspective.

As a verb inspect is

to examine critically or carefully; especially, to search out problems or determine condition; to scrutinize.

As an adjective curious

is (lb) fastidious, particular; demanding a high standard of excellence, difficult to satisfy.

As a verb confuse is

to thoroughly mix; to confound; to disorder.