As an adverb extremely

is (degree) to an extreme degree.

As an adjective ultrasecret is

extremely secret of the utmost secrecy or top secrecy.

As adjectives the difference between secret and ultrasecret

is that secret is being or kept hidden while ultrasecret is extremely secret of the utmost secrecy or top secrecy.

As a noun secret

is (countable|uncountable) knowledge that is hidden and intended to be kept hidden.

As a verb secret

is to make or keep secret.

As a noun secrecy

is concealment; the condition of being secret or hidden.

As an adjective ultrasecret is

extremely secret of the utmost secrecy or top secrecy.

As adjectives the difference between very and supercosmic

is that very is true, real, actual while supercosmic is very cosmic.

As an adverb very

is to a great extent or degree; extremely; exceedingly.

As nouns the difference between metallic and breithauptite

is that metallic is a color while breithauptite is (mineral) a nickel antimonide mineral with the chemical formula nisb, having a metallic opaque copper-red appearance.

As an adjective metallic

is made of, appearing to be made of, resembling, or related to metal.

As nouns the difference between opaque and breithauptite

is that opaque is (obsolete|poetic) an area of darkness; a place or region with no light while breithauptite is (mineral) a nickel antimonide mineral with the chemical formula nisb, having a metallic opaque copper-red appearance.

As an adjective opaque

is neither reflecting nor emitting light.

As a verb opaque

is to make, render (more) opaque.

As nouns the difference between copper and breithauptite

is that copper is (lb) a reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol cu, and atomic number 29 or copper can be (slang|law enforcement) a police officer while breithauptite is (mineral) a nickel antimonide mineral with the chemical formula nisb, having a metallic opaque copper-red appearance.

As an adjective copper

is made of copper.

As a verb copper

is to sheathe or coat with copper.

As nouns the difference between red and breithauptite

is that red is (reverse electrodialysis) while breithauptite is (mineral) a nickel antimonide mineral with the chemical formula nisb, having a metallic opaque copper-red appearance.

As nouns the difference between titanium and titanowodginite

is that titanium is titanium while titanowodginite is (mineralogy) a titanium-bearing mineral of the wodginite group.

As nouns the difference between mineral and titanowodginite

is that mineral is mineral while titanowodginite is (mineralogy) a titanium-bearing mineral of the wodginite group.