Sabza seeds (written as Sabja in the other answer) are the seeds of Tulsi. They are sweet basil-seeds. They have a place in Ayurveda and have been in India for millenia. Chia seeds are native to South America and were introduced on the old world by Europeans. They don't have any particular name in Hindi. read more
Chia seeds are not grown in India and are imported from Mexico and other countries in india. Since plant is not grown in india , it has no hindi name. So chia seeds can be called as चीया बीज in hindi. Often people in India confuse chia seeds with sweet basil seeds a.k.a Sabja/सब्जा. Sabja and chia seeds are two different seeds. read more