As nouns the difference between piezometer and standpipe

is that piezometer is an instrument used to measure pressure while standpipe is a vertical pipe into which water is pumped so that a desired pressure is available at the bottom.

As verbs the difference between precipitate and impels

is that precipitate is to make something happen suddenly and quickly; hasten while impels is (impel).

As a noun precipitate

is a product resulting from a process, event, or course of action.

As an adjective precipitate

is headlong; falling steeply or vertically.

As a verb bid

is .

As a noun cast is

moment or cast can be luck, fortune.

As an adjective upfront is

honest, frank and straightforward.

As an adverb upfront is

beforehand.

As a noun upfront is

(television) a meeting of network executives with the press and major advertisers, signaling the start of advertising sales for a new season.

As a verb upfront is

to bring to the fore; to place up front for consideration.

As a proper noun eye

is (uk|colloquial) the comedic magazine.

As a noun ball is

.

As a verb confront is

to stand or meet facing, especially in competition, hostility or defiance; to come face to face with; to oppose; to challenge.

As an adjective bifold

is twofold, double.

As a noun billfold is

a small, folding sleeve or case designed to hold paper currency, as well as credit cards, pictures, etc.

As a noun metal is

heavy metal (music).

As nouns the difference between luncheons and banquets

is that luncheons is plural of luncheon while banquets is plural of banquet.

As a verb banquets is

third-person singular of banquet.

As nouns the difference between luncheons and banquet

is that luncheons is while banquet is a large celebratory meal; a feast.

As a verb banquet is

to participate in a banquet; to feast.