loyal/loyalty

loyal /ˈlɔiəl/ adj. 忠诚的，忠心的：be loyal to one’s duty忠于职责；be loyal in one’s love 忠诚于爱情；a husband loyal to his wife 忠于妻子的男人

 loyalty /ˈlɔiəlti/ n. ［u］忠诚，忠心：a man of loyalty 忠贞之士；out of loyalty to the people 出于对人民的忠诚；loyalty of the people for the country 人民对国家的忠心［考句］Dogs are often praised for their loyalty; they almost never abandon their masters. 狗一贯以忠诚而受到赞扬，它们几乎从不背弃主人。