start doing	embark
understand	figure out
fault	defect
take sth in throuhg your mouth and down to your stomach	swallow
not working properly	faulty
accepted through established use	conventional
react	respond
bad effect of a drug intended to cure you	side effect
difference	variation
failure to produce a result	ineffectiveness
harmful or unfavourable	adverse
tell a patient what medicine to take	prescribe
description	profile
very full of sth	bulging
withdrew	took out
leftover bits of food	table scraps
moved without any conscious effort	wandered
loud noise indicating danger	siren
unable to move	frozen to the spot
a hill or any inclined surface	slope
ability to remain steady	balance
faced	confronted
things left in tiny little pieces	shattered remains
dragged along without having control	swept away
closely packed	huddled
crying uncontrollably	sobbing