No. It’s not bold and blue and “the intended message is clearly conveyed.” Especially during non time critical periods, such as with reference to starting/stopping motors on the ground, or when giving a departure briefing (“if we lose a motor…”). Now if you’re referring to actions and callouts during an engine failure, standard industry and company lingo is “engine failure,” and all checklists and QRC/QRH items use the word “engine,” and for the sake of safety, standardization, and clarity/conciseness, those items ought to be read/said as written, since there is likely a time critical element. But at the gate giving a brief about losing a motor? No issue. There is no confusion about the use of that word and is therefore FCOM compliant, both in the intent/spirit and the literal verbiage of the FCOM.