Translation:Green onion salad
무침 never has translated to salad and never well. 파무침 means seasoned green onions.
From Google's dictionary:
sal·ad ˈsaləd/제출 noun noun: salad; plural noun: salads a cold dish of various mixtures of raw or cooked vegetables, usually seasoned with oil, vinegar, or other dressing and sometimes accompanied by meat, fish, or other ingredients. "a green salad" a mixture containing a specified ingredient served with a dressing. "a red pepper filled with tuna salad" a vegetable suitable for eating raw.
To me, seasoned green onions fit the description of an onion salad.
Sorry for poor formatting (also, for some reason, the search term "salad define" entry I used is not properly linked).