As nouns the difference between pyrolysis and methylecgonidine

is that pyrolysis is (chemistry|physics) the decomposition of a material or compound due to heat in the absence of oxygen or any other reagents while methylecgonidine is (organic compound) a chemical intermediate derived from ecgonine or cocaine; a pyrolysis product formed when crack cocaine is smoked.

Anhydromethylecgonine is a synonym of methylecgonidine.

As a noun methylecgonidine is

(organic compound) a chemical intermediate derived from ecgonine or cocaine; a pyrolysis product formed when crack cocaine is smoked.

As nouns the difference between ethyl and cocaethylene

is that ethyl is the univalent hydrocarbon radical, C₂H₅, formally derived from ethane by the loss of a hydrogen atom while cocaethylene is the ethyl ester of benzoylecgonine, structurally similar to cocaine, formed in vivo when cocaine and ethyl alcohol have been ingested simultaneously.

As adjectives the difference between vivid and nonvivid

is that vivid is (of perception) clear, detailed or powerful while nonvivid is not vivid.

As a noun vivid

is (new zealand) a felt-tipped permanent marker.

As a noun echo

is echo (a reflected sound that is heard again by its initial observer).

As an adjective nonechoing is

not echoing.

As nouns the difference between cocaethylene and ethylbenzoylecgonine

is that cocaethylene is (organic compound) the ethyl ester of benzoylecgonine, structurally similar to cocaine, formed in vivo when cocaine and ethyl alcohol have been ingested simultaneously while ethylbenzoylecgonine is the compound cocaethylene.

As nouns the difference between chemical and methylecgonidine

is that chemical is any specific chemical element or chemical compound while methylecgonidine is (organic compound) a chemical intermediate derived from ecgonine or cocaine; a pyrolysis product formed when crack cocaine is smoked.

As an adjective chemical

is (label) of or relating to alchemy.

As nouns the difference between intermediate and methylecgonidine

is that intermediate is anything in an intermediate position while methylecgonidine is (organic compound) a chemical intermediate derived from ecgonine or cocaine; a pyrolysis product formed when crack cocaine is smoked.

As an adjective intermediate

is being between two extremes, or in the middle of a range.

As a verb intermediate

is to mediate, to be an intermediate.

As a proper noun cuculidae

is .

As a noun cuculid is

(zoology) any of the family cuculidae of near-passerine birds, the cuckoos.

As nouns the difference between passerine and cuculid

is that passerine is any bird of the order passeriformes, which comprises more than half of all bird species while cuculid is (zoology) any of the family cuculidae of near-passerine birds, the cuckoos.

As an adjective passerine

is of, or relating to a passerine or perching bird.