Misplaced & Dangling Modifiers
A modifier must sit next to the word it describes: a misplaced modifier attaches to the wrong word ('she served cake to the children on paper plates'), and a dangling modifier describes a word missing from the sentence entirely.
Even single words wander: ‘only’ changes meaning with every position (‘only I tested him’ vs ‘I tested only him’). Place each modifier as close as possible to what it modifies and most ambiguity disappears.