In chemistry terms the difference between molecule and homoatomic

is that molecule is the smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds while homoatomic is describing a molecule, all of whose atoms are of the same element.

As a noun molecule

is the smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds.

As an adjective homoatomic is

describing a molecule, all of whose atoms are of the same element.

As a noun atom

is an (l).

As an adjective homoatomic is

(chemistry) describing a molecule, all of whose atoms are of the same element.

As a noun element

is element (part of a whole).

As an adjective homoatomic is

(chemistry) describing a molecule, all of whose atoms are of the same element.

Uninymic is a synonym of mononymous.

As adjectives the difference between uninymic and mononymous

is that uninymic is having or known by a single name while mononymous is having a single-word name.

As a noun vapour

is cloudy diffused matter such as mist, steam or fumes suspended in the air.

As a verb vapour

is to become vapour; to be emitted or circulated as vapour or vapour can be to become vapour; to be emitted or circulated as vapour.

As an adjective vaporose is

full of vapour; vaporous.

As adjectives the difference between vaporous and vaporose

is that vaporous is relating to vapour; misty, foggy, obscure, insubstantial while vaporose is full of vapour; vaporous.

As nouns the difference between cystine and lanthionine

is that cystine is while lanthionine is (amino acid) an analogue of cystine consisting of two alanine residues connected by a single sulfur atom.

As nouns the difference between alanine and lanthionine

is that alanine is (amino acid|uncountable) a nonessential amino acid 2-aminopropanoic acid found in most animal proteins while lanthionine is (amino acid) an analogue of cystine consisting of two alanine residues connected by a single sulfur atom.

As nouns the difference between sulfur and lanthionine

is that sulfur is a chemical element (symbol S) with an atomic number of 16 while lanthionine is an analogue of cystine consisting of two alanine residues connected by a single sulfur atom.

As an adjective sulfur

is of a yellowish green colour, like that of sulfur.

As a verb sulfur

is to treat with sulfur, or a sulfur compound, especially to preserve or to counter agricultural pests.

As nouns the difference between cattle and stallage

is that cattle is domesticated bovine animals (cows, bulls, steers etc) while stallage is (obsolete) the dues levied for the erection and use of a stall at a fair or market.