HSK C3/W3
Correct

基

/ jī / 
Strokes

Definition

base/foundation/basic/radical (chemistry)/(slang) gay

Example

As a Noun
base; foundation
1
Zhùjī
柱基

base of a pillar/column

2
Shíjī
石基

stone foundation

3
Bàjī
坝基

foundation of a dam

4
Zhùjī
筑基

build/lay the foundation

As an Adjective
basic; fundamental; primary; cardinal
As a Noun
base; group; radical