"EMINENT" and "IMMINENT"
"Eminent" means distinguished or prominent. "Imminent" means about to happen or impending. Ex.: She is an eminent scientist. The storm is imminent, so we should stay indoors.
"ELICIT" and "ILLICIT"
"Elicit" means to draw out or provoke a response. "Illicit" means illegal or forbidden. Ex.: The teacher's question elicited a lively discussion. The police uncovered an illicit gambling operation.