As nouns the difference between nitrofurantoin and doxycycline

is that nitrofurantoin is a nitrofuran drug, 1-(5-nitro-2-furfurylideneamino)hydantoin, used in the treatment on urinary tract infections such as cystitis while doxycycline is a broad-spectrum antibiotic, C22H24N2O8, derived from tetracycline.

As nouns the difference between pineal and melatonin

is that pineal is pineal while melatonin is a hormone, related to serotonin, that is secreted by the pineal gland, and stimulates colour change in the skin of reptiles, and is involved in the sleep/wake and reproductive cycles in mammals.

As a noun calvados

is (uncountable) an apple brandy made in normandy, france.

As a proper noun cognac is

a city in the charente of france, famous for cognac brandy.

As nouns the difference between entailment and implicature

is that entailment is the act of entailing, the state of being entailed, or something that is entailed while implicature is an implied meaning that is not expressed directly.

As nouns the difference between heartwood and softwood

is that heartwood is the wood nearer the heart of a stem or branch, different in color from the sapwood while softwood is the wood from any conifer (or from Ginkgo), without regarding how soft this wood is.

As adjectives the difference between scared and uneasy

is that scared is having fear; afraid, frightened while uneasy is (rare) not easy; difficult or uneasy can be restless; disturbed by pain, anxiety, or the like; disquieted; perturbed.

As a verb scared

is (scare).

As nouns the difference between thinking and intellectual

is that thinking is gerund of think while intellectual is an intelligent, learned person, especially one who discourses about learned matters.

As a verb thinking

is present participle of lang=en.

As an adjective intellectual is

belonging to, or performed by, the intellect; mental or cognitive; as, intellectual powers, activities, etc.

As nouns the difference between progress and attainment

is that progress is movement or advancement through a series of events, or points in time; development through time while attainment is the act of attaining; the act of arriving at or reaching; the act of obtaining by exertion or effort.

As a verb progress

is to move, go, or proceed forward; to advance.

As proper nouns the difference between merlin and hobby

is that merlin is merlin while hobby is .

As nouns the difference between polarity and electronegativity

is that polarity is the separation, alignment or orientation of something into two opposed poles while electronegativity is the tendency, or a measure of the ability, of an atom or molecule to attract electrons and thus form bonds.