Nouns

(n)impactthe striking of one body against another
(n)impact, wallopa forceful consequence; a strong effect“the book had an important impact on my thinking”, “the book packs a wallop”
(n)impingement, encroachment, impactinfluencing strongly“they resented the impingement of American values on European culture”
(n)shock, impactthe violent interaction of individuals or groups entering into combat“the armies met in the shock of battle”

Verbs

(v)impactpress or wedge together; pack together
(v)affect, impact, bear upon, bear on, touch on, touchhave an effect upon“Will the new rules affect me?”