guano

As a noun guano

is guano (dung from a sea bird or from a bat).

As a verb dung is

to use, employ.

As nouns the difference between iguana and guano

is that iguana is any of several members of the lizard family while guano is guano (dung from a sea bird or from a bat).

Manure is a synonym of guano.

As nouns the difference between guano and manure

is that guano is dung from a sea bird or from a bat while manure is animal excrement, especially that of common domestic farm animals and when used as fertilizer. Generally speaking, from cows, horses, sheep, pigs and chickens.

As a verb manure is

to cultivate by manual labor; to till; hence, to develop by culture.

As nouns the difference between apatite and guano

is that apatite is while guano is guano (dung from a sea bird or from a bat).

As a noun guano is

guano (dung from a sea bird or from a bat).

As nouns the difference between guava and guano

is that guava is a tropical tree or shrub of the myrtle family, Psidium guajava while guano is dung from a sea bird or from a bat.

As nouns the difference between guano and guaco

is that guano is dung from a sea bird or from a bat while guaco is any of various vine-like climbing plants of Central and South America and the West Indies, including Mikania and Aristolochia species, reputed to have curative powers.

As nouns the difference between guano and guana

is that guano is dung from a sea bird or from a bat while guana is a contraction of iguana (the lizard) made in British colonial America. (Reference: The Dinkum Dictionary : The Origins of Australian Words, Susan Butler, Text Publishing, 2001, ISBN 187648585X..

As nouns the difference between guano and guans

is that guano is guano (dung from a sea bird or from a bat) while guans is .