Binomials are expressions with two words linked by 'and' or 'or'. Based on the textbook dictionary references: 'sink or swim' means to succeed or fail without help; 'on and off' means sometimes or occasionally; 'mix and match' means putting different things together for a range of possibilities; 'all or nothing' means something to be done completely or not at all; 'part and parcel' means to completely be a part of or belong to; 'pick and choose' means to choose only the best; 'sooner or later' means at sometime in the future; and 'leaps and bounds' means to increase or develop very quickly.