understanding nothern and western blot

A group of student in a Genetics class has been trying to understand the normal functioning of a gene p60 in different tissue types. They show you the following results from experiments they did using mRNA (Northern) and protein (Western) from different tissues of a non-diseased child. The Northern hybridization experiments used a probe targeted at p60-encoding mRNA and the Western hybridization experiment used a probe targeted at the p60 protein.

What kind of molecule was used as a probe to visualize the location of the p60 mRNA in the Northern Blot? What kind of molecule was used as a probe to visualize the location of the p60 protein in the Western Blot?

I am really confused what is meant by targeting a p60 protein? Not really sure how to approach this question.