What does Gao mean in Chinese?

there are four meanings

1. 高 [gāo] －》1. tall 2. high 3. senior 4. high-pitched 5. old

2. 告 [gào] －》1. tell 2. sue 3. request 4. announce 5. declare

3. 搞 [gǎo] －》1. do 2. get

4. 糕(餻)[gāo] －》1. cake；pudding

there are four intonations in the chinese language and each intonation with the same spelling（pinyin）has different meaning