SimilarityRank
promo_code 0.827 52205
coupon_code 0.805 47847
[number]_%_off 0.689 20951
at_checkout 0.679 98571
discount 0.677 4205
[number]_%_discount 0.656 82527
special_rate 0.632 99063
special_offer 0.632 21925
$_[number]_off 0.626 99122
discount_on 0.625 44577
discount_for 0.623 38473
a_discount 0.620 21189
coupon_for 0.610 66115
group_rate 0.610 78172
discounted 0.608 54028
coupon 0.605 9832
Discount 0.598 45973
Coupons 0.568 94090
free_shipping 0.567 40947
registration_page 0.563 85129
discount_rate 0.551 72930
full_price 0.547 92207
conference_registration 0.537 88430
gift_card 0.525 24908
online_store 0.519 27502