This is the 319th most frequent Thai word.
ais
The Thai word "ais" (ไอซ์) is a transliteration of the English word "ice," often referring to ice or the name "Ice."
In this sentence, 'ไอศ' (ais) is part of the word 'ไอศกรีม' (ice cream), showing its borrowing usage in Thai to represent the English loanword.
ไอศกรีมรสช็อคโกแลตที่ฉันชอบที่สุด
Chocolate ice cream is my favorite.
Here, 'ไอศ' (ais) emphasizes the icy or cold nature in a metaphorical description.
ฉันรู้สึกเย็นเฉียบเหมือนอยู่ในไอศคฤหาสน์แห่งน้ำแข็ง
I feel extremely cold, as if in an icy mansion.
In this context, 'ไอศ' (ais) refers to the fleeting nature of time, likening it to steam or vapor.