The term 'not as many' can be expressed in two words: 'LESS' and 'FEWER'. The word 'LESS' is a four-letter word that means 'a smaller amount of something'. On the other hand, the word 'FEWER' is a five-letter word that means 'a reduced number of something'. Both words are used to describe a decrease in quantity or amount. However, 'FEWER' is usually used when referring to countable items, while 'LESS' is used when referring to uncountable items. For example, one would say 'I have FEWER books than you' but 'I have LESS money than you'.