import pandas as pd

data = {'Name':['Tom', 'nick', 'krish', 'jack'], 'Age':[20, 21, 19, 18]}
a = pd.DataFrame(data)

data2 = {'things':['mike', 'bob', 'june', 'mark'], 'numbers':[33, 11, 22, 14], 'monumbers':[1,2,3,4]}
b = pd.DataFrame(data2)

c = pd.concat([a,b], axis=0, ignore_index=True)