Meaning : A speculative scheme that depends on unstable factors that the planner cannot control.
Example :
His proposal was nothing but a house of cards.
A real estate bubble.
Synonyms : bubble
Meaning : An unstable construction with playing cards.
Example :
He built three levels of his cardcastle before it collapsed.
Synonyms : card-house, cardcastle, cardhouse
House of cards meaning in Bengali (Bangla).