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vaccination vs. immunization

[vak-suh-ney-shuhn] / ˌvæk səˈneɪ ʃən /

noun

Medicine/Medical.
vaccinations plural
  1. the act or practice of vaccinating; inoculation with a vaccine.

[im-yuh-nuh-zey-shuhn, ih-myoo-] / ˌɪm jə nəˈzeɪ ʃən, ɪˌmju- /

noun

immunizations plural
  1. the fact or process of becoming immune, as against a disease.

  2. Finance. a method of protection against fluctuating bond interest rates by investing in securities having different yields and terms.