regard, attentiveness, mind, listen, paying attention, heedance, heads-up, headtire, heads up, hearkening, more...

heedlessness, heedlessnesses

pay, give, listen, attend, notice, obey, more...

pay attention to,   listen carefully,   pay close attention,   listen intently,   listen attentively,   take it seriously,   take advice,   be mindful of,   pay mind to,   be warned