増大
ぞうだい · zoudai · JLPT N2 · noun
addition
📈 増 = add + 大 = big: adding on until it becomes bigger
増 (zou, to add to) + 大 (dai, big) makes a growing total. Its first syllable matches 象 (zou, elephant), so keep the two kanji apart by meaning.
大 — pictograph of a person with arms outstretched
大 is a pictograph showing a person standing with arms and legs spread wide. The outstretched arms suggest 'big' or 'great', extending from the literal image of a large stance to abstract meanings like important or grand. It is one of the oldest characters, found on oracle bones.