The numbers in idioms are used a lot. For example, they are full of vigor and prosperity. Non-integer numbers have also entered idioms, such as half-way, half-dominated. There are two idioms: kill two birds with one stone and kill two birds with one stone. "Two" and "double" are numbers "2" Different representations. Most idioms are composed of four words, and numerals are sometimes "used together", such as five brilliant colors, three heads and six arms. There are also idioms composed of numerals purely, such as three three two, one fifty one ten. The most suitable for this text title is:. ['The relationship between idioms and numbers.', 'Idioms.', 'Number Idioms and Idiom Numbers.', 'Idioms with numbers.']