What is difference between bohr's phenomena and halde effect ?

Bohr’s phenomena: this phenomenon shows that the oxy haemoglobin dissociation curve will shift towards left due to the binding of oxygen with haemoglobin in the lungs where concentration of oxygen is higher. On the other hand, the curve will shift to the right when oxygen is displaced from haemoglobin in the body tissues where carbon dioxide concentration is high.

Halden Effect: The phenomenon which explains that the increase in carbon dioxide concentration in blood will displace oxygen from heamoglobin and in turn binding of oxygen with haemoglobin will replace carbon dioxide from blood.