Em Portuguese, elas têm o mesmo meaning. But, in English, há 2 different words:
Safety: we use it para talk about physical integrity, health, good hygiene, ausência de accident risks.
E.g.: Helmets are fundamental para your safety.
Security: é used para talk about military, property security, stability de um country, a security de não perder seu job.
E.g.: Airports aumentaram as medidas de security after attack.
Access http://www.teclasap.com.br/safety-x-security/ to learn more.
• 1: https://www.rush.edu/sites/default/files/bike-helmets-family-fb.jpg
• 2: https://www.ywcanwil.org/wp-content/uploads/2016/07/bikes-1.jpg
• 3: http://www.nandssecurity.org/images/background/bg01.jpg
IMAGE COURTESY: IMAGENS INTERNAS AO POST:
• 1: https://c1.staticflickr.com/9/8107/8614768202_fd1470a1e6_b.jpg
• 2: https://www.ctvnews.ca/polopoly_fs/1.2827113.1458647330!/httpImage/image.jpg_gen/derivatives/landscape_960/image.jpg
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