acquaintance
advertence
advertency
alertness
apperception
appreciation
appreciativeness
assiduity
assiduousness
attention
attention span
attentiveness
care
cognition
cognizance
concentration
consciousness
consideration
conversance
diligence
ear
earnestness
experience
feeling
heed
heedfulness
insight
intentiveness
intentness
knowingness
knowledge
mindfulness
noesis
note
notice
observance
observation
percept
perception
realization
recognition
regard
regardfulness
remark
respect
response
response to stimuli
sensation
apprehension
assessment
comprehension
conviction
reality
recollection
satisfaction
significance
tension
fairness
unfairness