Matching text using grep or awk

Question

I am having problems with grep and awk. I think it\'s because my input file contains text that looks like code.

The input file contains ID names and looks like this:

Answer 1

This will do the trick:

$ awk 'NR==FNR{a[$0];next}$NF in a{print}' input reference
ENSG00000199537 SNORD115-40
ENSG00000207793 MIR432
ENSG00000207447 RNU6-2