As a noun coach

is a wheeled vehicle, generally drawn by horse power.

As a verb coach

is (sports) to train.

As a proper noun landau is

landau (independent city in rhineland-palatinate, germany).

As verbs the difference between programing and projecting

is that programing is while projecting is .

As an adjective projecting is

sticking out.

As nouns the difference between letters and report

is that letters is while report is report (all senses).

As a verb letters

is (letter).

As nouns the difference between testimonials and memos

is that testimonials is while memos is .

As a verb analyse

is .

As a noun observer is

one who makes observations, monitors or takes notice.

As adjectives the difference between central and peripheric

is that central is being in the centre while peripheric is peripheral.

As an adjective central

is being in the centre.

As a noun peripheries is

.

As an adjective irremediable

is irremediable.

As a noun terminal is

terminal (at an airport etc).

As adjectives the difference between inquisitive and apathetic

is that inquisitive is eager to acquire knowledge while apathetic is void of feeling; not susceptible of deep emotion; passionless; indifferent.

As nouns the difference between coal and sodium

is that coal is (uncountable) a black rock formed from prehistoric plant remains, composed largely of carbon and burned as a fuel while sodium is a soft, waxy, silvery reactive metal that is never found unbound in nature, and a chemical element (symbol na) with an atomic number of 11 and atomic weight of 2298977.

As a verb coal

is to take on a supply of coal (usually of steam ships).