a line or plane that is equidistant from another line or plane at all points

relating to the center or the most important part

केंद्रीय

English Usage: The central idea of the project is sustainability.

Hindi Usage: परियोजना का केंद्रीय विचार स्थिरता है।

having the same direction, course, nature, or tendency

समानान्तर

English Usage: The parallel lines never meet, no matter how far they extend.

Hindi Usage: समानांतर रेखाएँ कभी नहीं मिलती, चाहे वे कितनी भी दूर जाएँ।

situated in the middle, or being of primary importance

in a manner comparable to something else

समानान्तर

English Usage: The issues arise in parallel with the changes in policy.

Hindi Usage: समस्याएँ नीति में परिवर्तनों के समानांतर उत्पन्न होती हैं।