Principality : রাজশাসন বা রাজশাসিত রাষ্ট্র্র;
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principal debtor  principality  principled  See Words Also In
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Appropriate Prepositions
Business with (ব্যবসা, কাজ): He is pleased to do business with you.
Desire for (কামনা): He has no desire for fame.
Fed up with (বিরক্ত): He is fed up with waiting for her.
Regard for (সম্মান): Good boys have great regard for their teachers.
Relevant to (প্রাসঙ্গিক): Your answer is not exactly relevant to my question.
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Idioms
Hush money (ঘুষ): He offered a hush money to disclose the file.
In one’s teens (তের থেকে উনিশ বছর বয়সের মাঝে): She is yet in her teens.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.
Slip of the tongue (বলায় সামান্য ভুল): This is a slip of the tongue; don’t pay much stress on it.