They may be different things, but they correlate a lot oft times.

“From a large survey of 5,000 citizens of ten European countries, we showed that the prevalence of those harboring (self reported) anti-Semitic views consistently increases with respondents’ degree of anti-Israel sentiment, even after controlling for other factors. It is noteworthy that fewer than one-quarter of those with anti-Israel index scores of only 1 or 2 harbor anti-Semitic views (as defined by anti-Semitic index scores exceeding 5), which supports the contention that one certainly can be critical of Israeli policies without being anti-Semitic. However, among those with the most extreme anti-Israel sentiments in our survey (anti-Israel index scores of 4), 56 percent report anti-Semitic leanings. Based on this analysis, when an individual’s criticism of Israel becomes sufficiently severe, it does become.” (Kaplan & Small 2006, p. 560)"

[Kaplan, Edward H.; Small, Charles A. (August 2006). “Anti-Israel Sentiment Predicts Anti-Semitism in Europe”. The Journal of Conflict Resolution. ]