言葉数(ことばかず)number of words, vocality

彼(かれ)は言葉数(ことばかず)が多(おお)くて、話(はなし)が長(なが)い。

He uses a lot of words, so his talks are long.

父(ちち)は言葉数(ことばかず)が少(すく)ない人(ひと)で、寡黙(かもく)である。

My father is a man of few words and is taciturn.

こんな言葉数(ことばかず)の少(すく)ない辞書(じしょ)では使(つか)い物(もの)にならない。

This dictionary with so few words is useless.

母(はは)は言葉数(ことばかず)が少(すく)ないから、母(はは)と一緒(いっしょ)にいると気(き)まずいです。

It's awkward to be with my mother because she is a person of few words.

その少(すく)ない言葉数(ことばかず)を改善(かいぜん)すればこそ、辞書(じしょ)の売(う)れ行(い)きが伸(の)びるのだ。

It is precisely by improving that limited number of words that dictionary sales will increase.