Jenga (the game)
Jared
A four letter word that starts with J and ends with M: jism.
Hadj
Two letter word with J in them: ja. jo. Note that there are no two (2) letter word that ends with J.
There are no words in the English language that begin with the letter "i" and end with the letter j.
java
juice
Juno
Jeer
Janek
abjectadjectiveadjournadjustdejecteddisjointeddoorjambdrudgejadejudgejaundice