As nouns the difference between guanine and guanidine

is that guanine is a substance first obtained from guano; it is a nucleic base and pairs with cytosine in DNA and RNA while guanidine is a strong base HN=C(NH₂)₂ obtained by the oxidation of guanine.

Biguanidine is a derived term of guanidine.

As a noun guanidine is

(organic compound) a strong base hn=c(nh₂)₂ obtained by the oxidation of guanine.

Nitroguanidine is a derived term of guanidine.

As nouns the difference between nitroguanidine and guanidine

is that nitroguanidine is (chemistry) a colourless, crystalline solid manufactured from guanine and used in explosives and pesticides while guanidine is (organic compound) a strong base hn=c(nh₂)₂ obtained by the oxidation of guanine.

As nouns the difference between cation and guanidium

is that cation is (brazil) while guanidium is (organic chemistry) the monovalent cation formed by protonation of guanidine.

As a proper noun grey

is .

As a noun greylag is

a large grey european goose, anser anser , with pink legs and dull orange beak.

As nouns the difference between european and greylag

is that european is european while greylag is a large grey european goose, anser anser , with pink legs and dull orange beak.

As an adjective european

is european.

As nouns the difference between goose and greylag

is that goose is any of various grazing waterfowl of the family anatidae, bigger than a duck while greylag is a large grey european goose, anser anser , with pink legs and dull orange beak.

As a verb goose

is (slang) to sharply poke or pinch someone's buttocks derived from a goose's inclination to bite at a retreating intruder's hindquarters.

As a proper noun anser

is .

As a noun greylag is

a large grey european goose, anser anser , with pink legs and dull orange beak.

As an acronym base

is b'''uilding'', '''''a'''ntenna-tower'', '''''s'''pan'', '''''e arth .

As a noun guanidine is

(organic compound) a strong base hn=c(nh₂)₂ obtained by the oxidation of guanine.

As a noun solitary

is one who lives alone, or in solitude; an anchoret, hermit or recluse.

As an adjective solitary

is living or being by one's self; alone; having no companion present; being without associates.

As a verb gregarize is

(biology) to transform solitary insects etc into a swarm or gregaria due to rapid growth in population.