"A ball and tea"
"과" for word that ends with consonants like ball(공과) and "와" for word that ends with with vowels like apple(사과와)
2-minute video covering "and"
https://www.howtostudykorean.com/unit1/unit-1-lessons-9-16/lesson-13/ may have been the link nieonte was referring too. You might want to start this course from the beginning and use it to supplement DL.