The adjective form of 'Circle' -

• Circle (noun):
English Meaning- A closed plane curve every point of which is equidistant from a fixed point within the curve.
Bengali Meaning- (১) (জ্যামিতি) বৃত্ত; পরিধি; পরিধি রেখা।
(২) বৃত্তাকার বস্তু: We stood in a circle.

Options,
• Circular (adjective):
English Meaning- Having the form of a circle.
Bengali Meaning- গোল; বৃত্তাকার; বৃত্তাকারে পরিভ্রাম্যমাণ।

• Encircle (verb):
English Meaning- To form a circle around.
Bengali Meaning- বৃত্তাকারে ঘিরে ফেলা; বৃত্তাবদ্ধ করা।

• Circulation: Noun: the process in which something such as information, money, or goods passes from one person to another.
• Circulate: Verb: to go around or through something, or to make something go around or through something.

Source:
1. Merriam-Webster Dictionary.
2. Accessible Dictionary by Bangla Academy.
3. Cambridge Dictionary.