impact

nouns

the striking of one body against another
impact
is a type of (narrower)
the physical coming together of two or more things
"contact with the pier scraped paint from the hull"
contact, impinging, striking
a forceful consequence; a strong effect
"the book had an important impact on my thinking"; "the book packs a wallop"
impact, wallop
influencing strongly
"they resented the impingement of American values on European culture"
encroachment, impact, impingement
the violent interaction of individuals or groups entering into combat
"the armies met in the shock of battle"
impact, shock

verbs

press or wedge together; pack together
impact
is derived from
impaction
is a type of (narrower)
squeeze like a wedge into a tight space
"I squeezed myself into the corner"
force, squeeze, wedge
have an effect upon
"Will the new rules affect me?"
affect, bear on, bear upon, impact, touch, touch on