毛

mao

hair, fur, feather

眉毛 eyebrows; 羊毛 wool; 毛糙 rough; 

毛毛雨 drizzle (lit. hairy rain); 毛主席 Chairman Mao

Refers to any type of hair, be it human, animals, plants or even on fruits. Also used as unit of currency in modern China. (1毛 = 1/10元73)

竹

zhu

笔

bi

pen(cil)

writing brush

毛笔 Calligraphy brush (lit. hair pen); 铅笔 pencil (lit. lead brush)

圆珠笔 ballpoint pen; 笔记 notes; 笔名 pen name

a bamboo (竹) straw with animal hair (毛) at the tip, symbolizes a brush for writing, now used to refer to any writing tools including pen and pencil.

高

gao

high, tall

a large palace with a high large entrance

毫

hao

at all, in the least

fine hair

丝毫 The slightest bit; 毫厘 "A tiny difference" (used in idioms like 失之毫厘，谬以千里, "A minimal error leads to massive deviation"

毫米 Millimeter" (lit. "hair-meter," reflecting its tiny scale; 毫克 Milligram

Symbolizes fine and long (高) hair (毛), also used to mean not in the least – a negation to stress something even like a fine hair is not there at all.