As nouns the difference between mechanic and machinist

is that mechanic is a skilled worker capable of building or repairing machinery. A mechanic can be compared to a technician, the distinction being that the technician is stronger in theory, the mechanic stronger in hands-on experience while machinist is a constructor of machines and engines; one versed in the principles of machines.

As an adjective mechanic

is mechanical; relating to the laws of motion in the art of constructing things.

As adjectives the difference between innocuous and ingenious

is that innocuous is harmless; producing no ill effect while ingenious is displaying genius or brilliance; tending to invent.

As a verb enlist

is to enter on a list; to enroll; to register.

As a noun registration is

(uncountable) the act of signing up or registering for something.

As a pronoun some is

a certain number, at least one.

As a determiner some is

a certain proportion of, at least one.

As an adverb some is

of a measurement; approximately, roughly.

As nouns the difference between calibration and graduation

is that calibration is the act of calibrating something while graduation is the action or process of graduating and receiving a diploma for completing a course of study (such as from an educational institution).

Boin is likely misspelled.

Boin has no English definition.

As a noun babe is

a baby or infant; a very young human or animal.

As a noun book

is book.

As a proper noun penny is

a diminutive of the female given name penelope.

As adjectives the difference between early and earliest

is that early is at a time in advance of the usual or expected event while earliest is (early).

As adverbs the difference between early and earliest

is that early is at a time before expected; sooner than usual while earliest is (early).

As a noun early

is a shift (scheduled work period) that takes place early in the day.

As nouns the difference between discharge and fire

is that discharge is (symptom) (uncountable ) pus or exudate (other than blood) from a wound or orifice, usually due to infection or pathology while fire is the sector of the economy including finance, insurance and real estate businesses.

As a verb discharge

is to accomplish or complete, as an obligation.

As nouns the difference between fowl and rooster

is that fowl is (archaic) a bird while rooster is a male of any species of gallinaceous bird typically refers to the domestic chicken,.

As a verb fowl

is to hunt fowl.