lichen

As nouns the difference between lichen and desert

is that lichen is any of many symbiotic organisms, being associations of fungi and algae; often found as white or yellow patches on old walls, etc while desert is desert.

As an adjective desert is

deserted.

As nouns the difference between mold and lichen

is that mold is a hollow form or matrix for shaping a fluid or plastic substance while lichen is any of many symbiotic organisms, being associations of fungi and algae; often found as white or yellow patches on old walls, etc.

As a verb mold

is to shape in or on a mold.

As nouns the difference between lichen and bryophyte

is that lichen is any of many symbiotic organisms, being associations of fungi and algae; often found as white or yellow patches on old walls, etc while bryophyte is (botany) any plant of the division bryophyta, defined sensu lato to comprise the mosses, liverworts and hornworts and corresponding to all embryophytes that are not vascular plants.

Blight is a related term of lichen.

As nouns the difference between blight and lichen

is that blight is any of many plant diseases causing damage to, or the death of, leaves, fruit or other parts while lichen is any of many symbiotic organisms, being associations of fungi and algae; often found as white or yellow patches on old walls, etc.

As a verb blight

is to affect with blight; to blast; to prevent the growth and fertility of.

As a noun lichen is

any of many symbiotic organisms, being associations of fungi and algae; often found as white or yellow patches on old walls, etc.

As a noun lichen is

any of many symbiotic organisms, being associations of fungi and algae; often found as white or yellow patches on old walls, etc.

Rust is a related term of lichen.

As a verb rust

is to grow.

As a noun lichen is

any of many symbiotic organisms, being associations of fungi and algae; often found as white or yellow patches on old walls, etc.

As nouns the difference between mould and lichen

is that mould is an alternative spelling of lang=en while lichen is any of many symbiotic organisms, being associations of fungi and algae; often found as white or yellow patches on old walls, etc.

As a verb mould

is an alternative spelling of lang=en.

As a noun lichen

is any of many symbiotic organisms, being associations of fungi and algae; often found as white or yellow patches on old walls, etc.

As a verb liken is

to compare; to state that (something) is like (something else).