Heart-to-heart and Matter-of-fact

Heart-to-heart adjective - Openly straightforward and direct without reserve or secretiveness.

Matter-of-fact and heart-to-heart are semantically related. in frank topic. In some cases you can use "Matter-of-fact" instead an adjective phrase "Heart-to-heart", when it comes to topics like completely honest.

Matter-of-fact adjective - Restricted to or based on fact.

Heart-to-heart and matter-of-fact are semantically related. Sometimes you can use "Heart-to-heart" instead an adjective phrase "Matter-of-fact".