I know that Bournemouth team is much stronger than Liverpool team,

Logically, if Bournemouth were indeed stronger than Liverpool, bookmakers wouldn't be offering higher odds for Bournemouth. We all know Liverpool is a strong team with a better squad. Meanwhile, Bournemouth is a mediocre team that will never be able to beat Liverpool.
The odds offered by bookmakers simply reflect the superiority of their favored team and their likelihood of winning.
Betting on Liverpool to win the match against Bournemouth is a good choice because Liverpool are favored in many ways, such as the venue at Anfield.
Betting on Bournemouth, however, carries a significant risk, and the odds are high if correct.