[Pandas Tutorial] how to concatenate (merge) two dataframe

in this video, I demo how to merge two dataframe as row or as column.
jupyter notebook below,

[CurtisxLarsen]

안녕 민석,

Thanks for the tutorial it was really clear and easy to follow.

[InturnetHaetMachine]

Thanks for the video. I had one question, lets say if I had a list of names that I wanted to add to df1, but no job. Is there an easy way I can add just the row of names, and it would put job as null since nothing is put there? I don't think there is.