impact (
http://definr.com/impact)
n 1: the striking of one body against another
2: a forceful consequence; "the book had an important impact on
my thinking"
3: influencing strongly: "they resented the impingement of
American values on European culture" [syn:
impingement,
encroachment]
4: the violent interaction of individuals or groups entering
into combat [syn:
shock]
v 1: press or wedge together; pack together
2: have an effect upon; "Will the new rules affect me?" [syn:
affect,
bear upon,
bear on,
touch on,
touch]