Might’ve missed this part in the statement:
A kangaroo word is a word that contains all the letters of one of its synonyms, called a joey word, arranged so that these letters appear in the same order in both words
Hope this helps 
Might’ve missed this part in the statement:
A kangaroo word is a word that contains all the letters of one of its synonyms, called a joey word, arranged so that these letters appear in the same order in both words
Hope this helps