Heed
Part of speech: noun
Definition: Attention; notice; observation; regard; – often with give or take. Careful consideration; obedient regard. A look or expression of heading.
Part of speech: verb
Definition: To mind; to regard with care; to take notice of; to attend to; to observe. To pay attention, care.
Example sentence: Paying more heed to the lessons of the past might teach us to be a little more cautious about some of the political decisions taken today.
Attentiveness
Part of speech: noun
Definition: the state of being attentive