Austrian Journalist who coined the term "Zionism" in 1890 — seven years before Herzl's First Congress. Later broke with political Zionism entirely, becoming an advocate for Yiddish autonomism and eventually ultra-Orthodox Judaism. The divergence between Birnbaum (linguistic/cultural) and Herzl (political/institutional) mirrors the Syntax vs Semantics split: same word, completely different semantic content. The term he created was captured by the institutional apparatus he eventually opposed.