Most commonly used word for "astrology"

[Demonic_Duck]

I'm wondering what the most commonly used word for "astrology" is, referring to the belief that the month of your birth determines details such as your personality, your favourite fruit, your lovemaking ability and the colour of your poop. It seems that the most commonly used word when talking about astrology is simply 星座 (star sign), but that doesn't encompass the whole belief system. I tried 占星学/占星术 but found it wasn't immediately understood and was considered to be too 专业.

 

As a side note, I'd also be interested to know the best translation for "demonstrably false"

[陳德聰]

To me 星座 does encompass the whole belief system, as a sort of short hand/meronym for 占星术 (I refuse to call it 占星学). Often you can ask 信星座么？

[Nathan Mao]

Demonstrably False：

 

Some variation close to one of these, depending on the context:

有证明是假

明确是不对

缺科学性

客观是凭空

[Sinolingua]

陳德聰 is right, and the best translation for "demonstrably false" depends on the certain context. For example, 明显错误，荒谬绝伦，纯属虚构.