brain science

tapering

narrower at one end

forge

workmanship the degree of skill with witch a product is made or a job done

confer

to talk together

extracts

to pull out

adhesive

sticky or something that is sticky

elevated

raised or placed higher than the surrounding area

durious

crazed and confused

fracture

to break

ideal

perfect fit best

cultured

educated about human thought and ways of living

marvels

extraordinary things astonishing people or things

lurking

to remain hidden and waiting to ambush attack or act

sterile

germ free from bacteria or other living microorganisms totally clean

abate

to become less intense to reduce in amount degree intensity etc lessen diminish becomes less intense

modest

not boastful not elaborate

metaphor allusion

allusion is a reference to a well-known person or work, while a metaphor is a comparison between two things. 

allusion with simile

An allusion is an indirect reference, while a simile is a comparison that uses "like" or "as". It's possible to use an allusion within a simile