As nouns the difference between tetrahedron and pentachoron

is that tetrahedron is a polyhedron with four faces; the regular tetrahedron, the faces of which are equal equilateral triangles, is one of the Platonic solids while pentachoron is a four-dimensional object equivalent to a tetrahedron, constructed out of five tetrahedra.

As proper nouns the difference between armenian and lomavren

is that armenian is the language of Armenia and the Armenian people, whose older stages are Old Armenian and Middle Armenian while Lomavren is the mixed language of the Armenian Lom people (the Bosha), spoken by a tiny number of persons mostly in Armenia but also Azerbaijan, Russia and Syria and consisting chiefly of Armenian grammar and pronunciation with an Indic-derived vocabulary.

As an adjective Armenian

is of, from, or pertaining to Armenia, the Armenian people, the Armenian language, or the Armenian alphabet.

As a noun Armenian

is a person from Armenia or of Armenian descent.

As proper nouns the difference between lom and lomavren

is that lom is a nomadic people related to the Rom and Dom, with origins in India, who reside in Transcaucasia; Caucasian Gypsies while Lomavren is the mixed language of the Armenian Lom people (the Bosha), spoken by a tiny number of persons mostly in Armenia but also Azerbaijan, Russia and Syria and consisting chiefly of Armenian grammar and pronunciation with an Indic-derived vocabulary.

As nouns the difference between caterpillar and budmoth

is that caterpillar is the larva of a butterfly or moth; leafworm while budmoth is any of various moths, whose caterpillars are the budworms.

As nouns the difference between budworm and budmoth

is that budworm is any of various moth caterpillars while budmoth is any of various moths, whose caterpillars are the budworms.

As a noun fanfare

is a flourish of trumpets or horns as to announce; a short and lively air performed on hunting horns during the chase.

As an adjective fanfarelike is

resembling a fanfare.

As a noun koan

is (zen buddhism) a story about a zen master and his student, sometimes like a riddle, other times like a fable, which has become an object of zen study, and which, when meditated upon, may unlock mechanisms in the zen student’s mind leading to satori.

As an adjective koanlike is

resembling a koan or some aspect of one: cryptic, concise, thought-provoking, etc.

As adjectives the difference between cryptic and koanlike

is that cryptic is having hidden meaning while koanlike is resembling a koan or some aspect of one: cryptic, concise, thought-provoking, etc.

As a noun cryptic

is (informal) a cryptic crossword.

As adjectives the difference between concise and koanlike

is that concise is brief, yet including all important information while koanlike is resembling a koan or some aspect of one: cryptic, concise, thought-provoking, etc.

As adjectives the difference between metastatic and nonmetastatic

is that metastatic is (medicine) relating to metastasis while nonmetastatic is not metastatic.