When can we use "and" and "but"?

[Learnermoh]

Hi everbody

Please tell me which word (and/but) is correct in the sentence below:

The journey is very interesting (and/but) it is very expensive, too.

Thank you in advance

Moh.

[Cerberus™]

"But" is used when two connected things are in opposition.
"And" is neutral, it does not show any special kind of connection between two things.
Either one could be used here depending on context. "But" is more probable because an opposition is likely here.

[Learnermoh]

Thank you Cerberus