Vocabulary consisting only from characters you are able to read
山
yama
mountain, pile, heap, climax, critical pointjlpt5, shizen
上
ue
above, on top of, up, upper part, surfacejlpt5
人
hito
man, person, human being, mankindhito, jlpt5
山上
sanjou
mountain topmix
二人
futari
two persons, two people, pair, couplejlpt5