letter of reference

noun 0.872

recommendation

noun 0.713

cover letter

noun 0.641

letter of credit

noun 0.582

love letter

noun 0.579

commendation

noun 0.571

letter

noun 0.558

letter of attorney

noun 0.552

character reference

noun 0.549

letter to the editor

noun 0.546

letter of comfort

noun 0.535

letterhead

noun 0.532

form letter

noun 0.527

letterer

noun 0.516

letter of credence

noun 0.514

letters

noun 0.508

open letter

noun 0.506

letter of wishes

noun 0.506

resume

noun 0.500