Shopping -- note that "receipt" is pronounced "ree-SEET" (or /ri:-'si:t/ if you know IPA). Bargain, wallet and refund have stress on the first syllable. Note also that the expression is "go shopping", NOT go to shopping.
“Frog in my throat” means “to be unable to speak clearly because your throat feels dry or blocked”. Example: In the interview I got a frog in my throat and had to cough many times before I could answer the questions.