economical; comparatively cheap

to be rested; to feel at ease; to repose; to be relieved

cheap; economical

safety; security

anxiety; uneasiness; worry; apprehension; fear; insecurity; suspense

stable

US-Japan Security Treaty

instability; insecurity; crankiness

security guarantee (e.g. military security, network security, etc.)

depreciation of the yen; weak yen

solace; relaxation

easy; simple