mindmap
root((安全))
safe
can imply that a risk has been run without incurring harm or damage: arrived home ~ and sound; or can stress freedom from risk: kept her ~ from harm; or can suggest a character that eliminates or mimimizes risk: ~ investments.
secure
usually stresses a freedom from anxiety or apprehension of danger or risk based on grounds that appear sound and sufficient: reached a ~ harbor before the storm broke.