a low area of land between hills or mountains, often with a river running through it.

घाटी

English Usage: The valley was filled with colorful wildflowers in spring.

Hindi Usage: वसंत में घाटी रंग-बिरंगे जंगली फूलों से भरी हुई थी।

an imaginary line about which a body rotates.

धुरी

English Usage: The Earth spins on its axis, making day and night.

Hindi Usage: पृथ्वी अपनी धुरी पर घूमती है, जिससे दिन और रात बनते हैं।

a line that divides a shape into two identical parts.

अक्ष

English Usage: The geometric figure has a line of symmetry along its axis.

Hindi Usage: ज्यामितीय आकृति में इसके अक्ष के साथ समरूपता की रेखा है।