No, it is absolutely not. Zionist is not a code word for Jewish people.
Zionism is about a Jewish national state, for Jews in Palestine, in response to the abhorrent anti semitism european jews faced in Europe, supported by Christian Zionists and those who believed colonisation in the Middle East would be strategically and geopolitically important.
The way Zionism has been implemented is by ethnically cleansing the indigenous population. You can't create a homeland by driving others out.
Many Jews were against zionism, from its inception, so no, not all Jews were or are zionists.
Zionists even collaborated with the Nazis. Theodore Herzl stated that the anti semites were allies in achieving his goals.
Ben Gurion's response to the possibility of thousands of Jewish children being admitted into Britain after Kristallnacht was:
"If I knew it would be possible to save all the children in Germany by bringing them over to England, and only half of them by transporting them to Eretz Yisrael, then I would opt for the second alternative. For we must weigh not only the life of those children, but also the history of the people of Israel."
Zionists purchased land in Palestine and put in place policies such as Histadrut - Jewish labour only. Those who employed local labourers were picketed, and often violently, to drive them out.
Source: The Blood Never Dried - a people's history of the British empire by John Newsinger.
Other examples, Article 7 of the Mandate provided for a nationality law to facilitate the acquisition of Palestinian citizenship by Jewish immigrants, irrespective of origin. This same law denied nationality to Palestinians who were abroad when the British took over.
More sources and also worth reading - mostly by Jewish authors:
Ten Myths about Israel by Ilan Pappe.
100 years of war on Palestine by Rashid Khalidi.
Genocide Bad by Sim Kern
Memoirs of an Arab Jew by Avi Shlaim