advantage, benefit

plan, a set of intended actions / plan, diagram, drawing, blueprint

(adverbial particle, dismissive, derogatory) emphasizes disgust, contempt, or otherwise negative feelings of the speaker: whatever

(informal) having no plan / (informal) unplanned

plans for one's career; career plan

What? What did you say?

whatchamacallit, X

what

What?, Huh?

what / that thing (used in place of words you can't remember at the moment.)