Question

define the following:
(a) saptarishi
(b) historians

Answer 1

(a) The group of stars is called saptarishi.
(b) The people who study about history are called historians

Answer 2

a)The Saptarishi (from Sanskrit: सप्तर्षि saptarṣi, a Sanskrit dvigu meaning "seven sages") are the seven rishis who are extolled at many places in the Vedas and Hindu literature. The Vedic Samhitas never enumerate these rishis by name, though later Vedic texts such as the Brahmanas and Upanisads do so. They are regarded in the Vedas as the patriarchs of the Vedic religion.

b)