Engineers, as practitioners of engineering, are people who invent, design, analyse, build and test machines, systems, structures and materials to fulfill objectives and requirements while considering the limitations imposed by practicality, regulation, safety, and cost. The word engineer (Latin ingeniator is derived from the Latin words ingeniare ("to contrive, devise") and ingenium ("cleverness").The foundational qualifications of an engineer typically include a 4-year bachelor's degree in an engineering discipline, or in some jurisdictions, a master's degree in an engineering discipline plus 4–6 years of peer-reviewed professional practice (culminating in a project report or thesis) and passage of engineering board examinations.