Term: twofer: a coupon that allows the holder to purchase two items (as two tickets to a play) for the price of one
Broader: coupon: a negotiable certificate that can be detached and redeemed as needed | Unrelated: flagfish: a fish with a dark-blue back and whitish sides with red stripes; found in swamps and streams of Florida
Broader: coupon: a negotiable certificate that can be detached and redeemed as needed | Unrelated: torture: unbearable physical pain
Broader: coupon: a negotiable certificate that can be detached and redeemed as needed | Unrelated: nutcracker: speckled birds that feed on nuts
Broader: coupon: a negotiable certificate that can be detached and redeemed as needed | Unrelated: derangement: a state of mental disturbance and disorientation
Broader: coupon: a negotiable certificate that can be detached and redeemed as needed | Unrelated: iodine-131: heavy radioactive isotope of iodine with a half-life of 8 days; used in a sodium salt to diagnose thyroid disease and to treat goiter
Broader: coupon: a negotiable certificate that can be detached and redeemed as needed | Unrelated: pilaf: rice cooked in well-seasoned broth with onions or celery and usually poultry or game or shellfish and sometimes tomatoes
Broader: coupon: a negotiable certificate that can be detached and redeemed as needed | Unrelated: baryon: any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1
Broader: coupon: a negotiable certificate that can be detached and redeemed as needed | Unrelated: aspidistra: evergreen perennial with large handsome basal leaves; grown primarily as a foliage houseplant
Broader: coupon: a negotiable certificate that can be detached and redeemed as needed | Unrelated: psychic: a person apparently sensitive to things beyond the natural range of perception
Broader: coupon: a negotiable certificate that can be detached and redeemed as needed | Unrelated: topgallant: a mast fixed to the head of a topmast on a square-rigged vessel