Isotopes are atoms having same atomic number but different atomic masses whereas isobars are atoms having different atomic numbers but same atomic masses.
Isotopes are atoms have same element but different At. Mass. ||. Isobars are atoms have different elements but same At mass

Element having same atomic number but different mass number are called isotopes.Element having same mass number but different atomic number are called isobars
Isotopes: the elements having same atomic no. But different mass no.is called isotopes…Isobars: the elements having different atomic no.but have same mass no. is called isobars..