As an adjective usefull

is .

As a noun handy is

tail.

As nouns the difference between nanism and cretinism

is that nanism is unusually small size, as a result of a developmental abnormality while cretinism is a condition of severely stunted physical and mental growth due to the untreated congenital deficiency of thyroid hormones.

As an adverb gradually

is in a gradual manner; making slow progress; slowly.

As a proper noun little is

.

As verbs the difference between feeding and loading

is that feeding is present participle of lang=en while loading is present participle of lang=en.

As nouns the difference between feeding and loading

is that feeding is an instance of giving food while loading is the action of the verb to load.

As nouns the difference between threnody and ballad

is that threnody is a song or poem of lamentation or mourning for a dead person; a dirge; an elegy while ballad is a kind of narrative poem, adapted for recitation or singing; especially, a sentimental or romantic poem in short stanzas.

As a verb ballad is

(obsolete) to make mention of in ballads.

In uncountable terms the difference between loading and feed

is that loading is the action of the verb to load while feed is food given to (especially herbivorous) animals.

In countable terms the difference between loading and feed

is that loading is a load, especially in the engineering and electrical engineering senses of force exerted, or electrical current or power supplied while feed is a gathering to eat, especially in quantity.

In transitive terms the difference between remove and retrieve

is that remove is to discard, set aside, especially something abstract (a thought, feeling, etc.) while retrieve is to fetch and bring in game.

In intransitive terms the difference between remove and retrieve

is that remove is to change one's residence; to move while retrieve is to fetch or carry back systematically, notably as a game.

As nouns the difference between installation and position

is that installation is an act of installing while position is a place or location.

As a verb position is

to put into place.

As nouns the difference between deception and defection

is that deception is disappointment while defection is (l).

As adjectives the difference between emergent and critical

is that emergent is arising unexpectedly, especially if also calling for immediate reaction; constituting an emergency while critical is inclined to find fault or criticize; fastidious; captious; censorious; exacting.

As nouns the difference between emergent and critical

is that emergent is a plant whose root system grows underwater, but whose shoot, leaves and flowers grow up and above the water while critical is a critical value, factor, etc.