modoru: (1) to return (2) to turn back (3) to go back
戻る --
v.
Transformation:
modorimasu -- v-masu
modotte -- v-te
modorimashita -- v-past
modoranai -- v.neg
Hint: when you refer to 'going home', you use kaeru. Modoru is used for other purpose, including like in battle, you ask your friend to return; or you said you are going back (to a class, office, etc)
monogatari: (1) tale (2) story (3) legend
物語 --
n.
Hint: I think there are lots of Japanese books, anime, and TV dorama that using the word 'monogatari'. There was a classic manga called Yokohama Monogatari, notable manga/anime Saiunkoku Monogatari, and a dorama called Hyakunen no Monogatari.