As a noun recommendation

is an act of recommending.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As a verb destroy

is .

As an adjective false is

(label) one of two states of a boolean variable; logic.

As an adjective radical

is favoring fundamental change, or change at the root cause of a matter.

As a noun radical

is a member of the most progressive wing of the liberal party; someone favouring social reform (but generally stopping short of socialism).

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As a verb untangle

is to remove tangles or knots.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As verbs the difference between slighted and neglected

is that slighted is (slight) while neglected is (neglect).

As an adjective neglected is

suffering from neglect.

As nouns the difference between terracotta and vermilion

is that terracotta is a hard red-brown unglazed earthenware, used for pottery and building construction while vermilion is a vivid red synthetic pigment made of mercury sulfide.

As adjectives the difference between terracotta and vermilion

is that terracotta is of the colour of while vermilion is having a brilliant red colour.

As a verb vermilion is

to color or paint vermilion.