Difficult IELTS Words - Group 1

n. a group of nations, parties, or persons united for common action

n. spot or stain, as of ink on paper; blur; weak point or failing

n. serious mistake typically caused by ignorance or confusion

v. show off oneself; speak of with excessive pride

n. formation of a close human relationship, as between friends; emotional and physical attachment occurring between a parent or parent figure

n. case with shelves for holding books, especially one with glazed doors

n. one who keeps accounts; one who has charge of keeping books and accounts in an office

n. stall where books are sold, as on a street; table with enclosed sides, for displaying books for sale

n. deep resonant sound, as of an explosion

v. start a computer using its bootstrap procedure