This puzzle asks you to find the single category linking five clues: Mail, Assignment, Hang up, Fence pole, and After/subsequent (as a prefix). The answer is Different definitions of “post”. The clues look unrelated on the surface but share one precise category. Read all five before guessing — the link should feel natural on every row. With only "Mail", many categories could fit. Hold your first guess and watch what clue 2 eliminates. "Mail" and "Assignment" must share one repeatable link — not a coincidence between two words. By clue 3 ("Hang up"), "Different definitions of “post”" should explain all three without bending meanings. "Fence pole" strengthens "Different definitions of “post”" rather than opening a new theory. The final clue ("After/subsequent (as a prefix)") confirms "Different definitions of “post”" — if it still fits naturally, the category is locked. Use the Solution tab above for an interactive clue-by-clue walkthrough, or the Solved board tab for the complete answer at a glance.