Engineering
Engineering is the creative application of science, mathematical methods, and empirical evidence to the innovation, design, construction, operation and maintenance of structures, machines, materials, devices, systems, processes, and organizations. The discipline of engineering encompasses a broad range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied mathematics, applied science, and types of application. See glossary of engineering.
Security
Security is freedom from, or resilience against, potential harm (or other unwanted coercive change) from external forces. Beneficiaries (technically referents) of security may be persons and social groups, objects and institutions, ecosystems, and any other entity or phenomenon vulnerable to unwanted change by its environment.
Security
To bargain freedom for security is the devil's bargain. Having made the bargain, one enjoys neither freedom nor security.
Gerry Spence, Give Me Liberty! Freeing Ourselves in the Twenty-First Century, Ch. 16 : Security, the One-Way Ticket to Slavery, p. 174 (1998)
