This is the 12810th most frequent Polish word.
niższy
Lower or shorter.
Here, 'niższy' is used to compare the relative height of two buildings, showing that one is less tall.
Ten budynek jest niższy niż tamten.
This building is shorter than that one.
'Niższy' indicates that the score is smaller in value compared to another score.
Mam niższy wynik od niego.
I have a lower score than him.
In this context, 'niższa' refers to a decreased or smaller value in the temperature scale.