A fraction or fractional number is written in the form of p/q , where both p & q are natural numbers and q is not equal to zero Few examples of fraction are 2/3, 100/342, 2/100, 41/11
A rational number is also written in the form of p/q , where both p & q are integers and q is not equal to zero Few examples of rational numbers are 5/7, 8/13, 23/7, 46/11
Following table shows difference and similarities of Fraction Number and Rational Number:
Fractional Number  Rational Number 

Written in the form of p/q  Written in the form of p/q  p and q are natural numbers  p and q are integers  q is not equal to Zero  q is not equal to zero  All Fractions can be referred to Rational Numbers also  All Rational Numbers cannot be referred as Fractions. Only Rational Numbers where p/q have positive integer, can be referred to as Fraction  Example: 1/2, 25/5, 9/7, 123/100  Example: 1/2, 5/8, 23/27, 100/23 
Hence, you can observe the similarities between a fraction and rational number. The highlighted part is the difference between a fraction and rational number

