I was recently gifted two Dyson fans.

1st is a Dyson purifier cool gen1 (TP10)

2nd is a Dyson pure cool (TP4B)

I tried researching the difference and I didn’t come up with a concrete answers on what the actual differences are between the 2. 
Can anyone tell me the differences between each so I decide which one to keep please and thank you. I am New to being a dyson fan owner and any help is appreciated.