As a noun assistance is

aid; help; the act or result of assisting.

As adjectives the difference between affordable and economical

is that affordable is able to be afforded while economical is careful with money so as not to spend too much; prudent; thrifty.

As nouns the difference between parenthesis and separation

is that parenthesis is a clause, phrase or word which is inserted (usually for explanation or amplification) into a passage which is already grammatically complete, and usually marked off with brackets, commas or dashes while separation is separation.

As a noun detachment is

(uncountable) the action of detaching; separation.

As an adjective rapid

is rapid; quick; fast; speedy.

As a proper noun speed is

.

As a noun lookout is

a vantage point with a view of the surrounding area.

As a noun book

is book.

As a verb buck is

.

As nouns the difference between cadge and entreat

is that cadge is (falconry) a circular frame on which cadgers carry hawks for sale while entreat is .

As verbs the difference between cadge and entreat

is that cadge is (geordie) to beg while entreat is (obsolete) to treat, or conduct toward; to deal with; to use.

As verbs the difference between skyrocketing and skyrocket

is that skyrocketing is present participle of skyrocket while skyrocket is to increase suddenly and extremely; to shoot up; to surge or spike.

As a noun skyrocket is

a type of firework that uses a solid rocket engine to rise quickly into the sky where it emits a variety of effects such as stars, bangs, crackles, etc.

As nouns the difference between pigs and pineapple

is that pigs is while pineapple is a tropical plant, ananas comosus , native to south america, having thirty or more long, spined and pointed leaves surrounding a thick stem.