As nouns the difference between battleship and destroyers

is that battleship is (military) large capital warship displacing tens of thousands of tons, heavily armoured and armed with big guns battleships are now obsolescent, replaced by smaller vessels with guided missiles types: dreadnought, pre-dreadnought while destroyers is .

As a noun scottish

is schottische (dance).

As a proper noun celtic is

a branch of the indo-european languages that was spread widely over western and central europe in the pre-christian era.

As an adjective celtic is

of the celts; of the style of the celts.

As a noun vision

is ghost.

As a verb culture is

.

In intransitive terms the difference between declare and recite

is that declare is to make a declaration while recite is to deliver a recitation.

In transitive terms the difference between declare and recite

is that declare is to make outstanding debts, e.g. taxes, payable while recite is to list or enumerate something.

As verbs the difference between declare and recite

is that declare is to make clear, explain, interpret while recite is to repeat aloud some passage, poem or other text previously memorized, often before an audience.

As adjectives the difference between rich and descriptive

is that rich is as hell, very while descriptive is of or relating to description.

As a noun descriptive is

(grammar) an adjective (or other descriptive word).

As adjectives the difference between spare and cold

is that spare is scanty; not abundant or plentiful while cold is having a low temperature.

As nouns the difference between spare and cold

is that spare is the act of sparing; moderation; restraint while cold is a condition of low temperature.

As a verb spare

is to show mercy.

As an adverb cold is

while at low temperature.

In mathematics terms the difference between formal and complex

is that formal is relating to mere manipulation and construction of strings of symbols, without regard to their meaning while complex is of a number, of the form a + bi, where a and b are real numbers and i is a square root of −1.

As adjectives the difference between formal and complex

is that formal is being in accord with established forms while complex is made up of multiple parts; composite; not simple.

As nouns the difference between formal and complex

is that formal is formalin while complex is a problem.

As a verb complex is

to form a complex with another substance.

As verbs the difference between estimate and foretell

is that estimate is to calculate roughly, often from imperfect data while foretell is to predict; to tell the future before it occurs; to prophesy.

As a noun estimate

is a rough calculation or guess.

As a noun estimation

is the process of making an estimate.

As a verb foretell is

to predict; to tell the future before it occurs; to prophesy.

Perpendicular is a synonym of steep.

As adjectives the difference between steep and perpendicular

is that steep is of a near-vertical gradient; of a slope, surface, curve, etc. that proceeds upward at an angle near vertical while perpendicular is at or forming a right angle (to).

As nouns the difference between steep and perpendicular

is that steep is a liquid used in a steeping process while perpendicular is a line or plane that is perpendicular to another.

As a verb steep

is to soak an item (or to be soaked) in liquid in order to gradually add or remove components to or from the item.