As nouns the difference between keystone and touchstone

is that keystone is the top stone of an arch while touchstone is a stone used to test the quality of gold alloys.

As verbs the difference between support and coo

is that support is (senseid)to keep from falling while coo is .

As a noun support

is something which supports often used attributively, as a complement or supplement to.

As nouns the difference between support and cooper

is that support is something which supports often used attributively, as a complement or supplement to while cooper is a craftsman who makes and repairs barrels and similar wooden vessels such as casks, buckets and tubs.

As verbs the difference between support and cooper

is that support is (senseid)to keep from falling while cooper is to make and repair barrels etc.

As verbs the difference between protect and repair

is that protect is to keep safe; to defend; to guard; to prevent harm coming to while repair is to restore to good working order, fix, or improve damaged condition; to mend; to remedy.

As a noun repair is

the act of repairing something.

As verbs the difference between tend and protect

is that tend is to kindle; ignite; set on fire; light; inflame; burn or tend can be (legal|old english law) to make a tender of; to offer or tender or tend can be (with to) to look after (eg an ill person) while protect is to keep safe; to defend; to guard; to prevent harm coming to.

In transitive terms the difference between emphasize and ensure

is that emphasize is to stress, give emphasis or extra weight to (something) while ensure is to make a pledge to (someone); to promise, guarantee (someone of something); to assure.

As nouns the difference between graduate and pyrotechnician

is that graduate is (senseid) a person who is recognized by a university as having completed the requirements of a degree studied at the institution while pyrotechnician is a person who designs or organises pyrotechnics.

As an adjective graduate

is graduated, arranged by degrees.

As a verb graduate

is (ergative) to be recognized by a school or university as having completed the requirements of a degree studied at the institution see note on “from” usage.

As adjectives the difference between about and fullwidth

is that about is moving around; astir while fullwidth is (computing|typography|of certain characters) occupying two columns on a traditional text display such as kanji, as opposed to halfwidth occupying only one column such as alphanumeric letters some characters have both forms: for example katakana ka has the fullwidth.

As a preposition about

is in a circle around; all round; on every side of; on the outside of .

As an adverb about

is not distant; approximate.

As a noun misery

is great unhappiness; extreme pain of body or mind; wretchedness; distress; woe.

As an adjective oppressed is

subject to oppression.

As a verb oppressed is

(oppress).

As verbs the difference between compelled and motivated

is that compelled is past tense of compel while motivated is past tense of motivate.

As an adjective motivated is

enthusiastic, especially about striving toward a goal.