Vocabulary consisting only from characters you are able to read
重たい
omotai
heavy, massive, serious, important, severe, oppressedadj
相当
soutou
(1)befitting, becoming, worthy of, proportionate, in keeping with, suitable, (2)considerable, substantial, (vs) (3)to be worthy of, to be proportionate to, (4)to correspond to (in meaning, functio suru