lease - rent, hire⏎
manager - boss, head, director, controller⏎
inform - tell, relate, influence, educate⏎
hallmark - sign, feature, indication, standard (of quality of something)⏎
hone - develop, improve, sharpen⏎
explain - justify, account for, interpret⏎
futile - useless, absurd, pointless⏎
headway - gain, progress, increase, rise, improvement⏎
factor - quality, feature, component, cause, influence⏎
establish - create, start, become successful demonstrate⏎