The Word is:”than”

than

/ðan,ð(ə)n/
conjunction & preposition
conjunction: than; preposition: than

1. introducing the second element in a comparison.
“he was much smaller than his son”
2. used in expressions introducing an exception or contrast.
“he claims not to own anything other than his home”
3. used in expressions indicating one thing happening immediately after another.
“scarcely was the work completed than it was abandoned”

Source credit: Google