As nouns the difference between firm and superfirm

is that firm is (uk|business) a business partnership; the name under which it trades while superfirm is an especially large and successful firm (business concern).

As an adjective firm

is steadfast, secure, hard (in position).

As a verb firm

is to make firm or strong; fix securely.

As an adjective nonrandom

is not at random, caused or manipulated, arranged.

As a noun nonrandomness is

the state or condition of being nonrandom.

As an adjective nonstochastic

is not stochastic.

As an adverb nonstochastically is

in a nonstochastic manner.

As nouns the difference between superhumanity and superhumanness

is that superhumanity is the state or condition of being superhuman while superhumanness is superhumanity.

As nouns the difference between aircraft and superjet

is that aircraft is a vehicle capable of atmospheric flight due to interaction with the air, such as buoyancy or lift while superjet is a jet aircraft with some superior quality, such as large size or high speed.

As nouns the difference between superior and superjet

is that superior is a person of higher rank or quality while superjet is a jet aircraft with some superior quality, such as large size or high speed.

As an adjective superior

is higher in quality.

Noninjury is a synonym of ahimsa.

As nouns the difference between ahimsa and noninjury

is that ahimsa is a doctrine of non-violence in Hinduism and Buddhism, concerned with the sacredness of all living things and an effort to avoid causing harm to them while noninjury is a practice or philosophy of not causing injury to others.

As an adjective noninjury is

not of or pertaining to injury.

Nonviolence is a synonym of noninjury.

As nouns the difference between nonviolence and noninjury

is that nonviolence is a philosophy that rejects the use of violence, and instead seeks to bring about change through peaceful responses even to violent acts while noninjury is a practice or philosophy of not causing injury to others.

As an adjective noninjury is

not of or pertaining to injury.

As adjectives the difference between harmonic and nonharmonic

is that harmonic is pertaining to harmony while nonharmonic is not harmonic.

As a noun harmonic

is a component frequency of the signal of a wave that is an integer multiple of the fundamental frequency.

As adjectives the difference between helpful and nonhelpful

is that helpful is furnishing help; giving aid; useful while nonhelpful is not helpful; unhelpful.