emotional
Based on feelings or relating to them; full of feeling.
Die Band ist für ihre emotionalen Balladen bekannt.
The band is known for its emotional ballads.

Loading your saved state.
Based on feelings or relating to them; full of feeling.
Die Band ist für ihre emotionalen Balladen bekannt.
The band is known for its emotional ballads.

The adjective 'emotional' (emotional) is derived directly from the noun 'die Emotion' (emotion). So it means that something has to do with emotions or is shaped by them.
Der Abschied war für alle ein sehr emotionaler Moment.
The farewell was a very emotional moment for everyone.
'Emotional' (emotional) can stand before a noun, after a verb like 'sein' (to be), or be used as an adverb to describe an action.
Das war eine sehr emotionale Rede.
That was a very emotional speech.
When it refers to a thing or situation, 'emotional' (emotional) is often combined with nouns such as 'Bindung' (bond), 'Intelligenz' (intelligence), 'Stress' (stress), or 'Unterstützung' (support).
Nach dem Unfall brauchte er viel emotionale Unterstützung von seiner Familie.
After the accident, he needed a lot of emotional support from his family.
When 'emotional' (emotional) describes a person, it is often intensified by adverbs such as 'sehr' (very), 'extrem' (extremely), or 'eher' (rather) to emphasize the character trait.
Sie ist ein eher emotionaler Typ und zeigt ihre Gefühle offen.
She is a rather emotional type and shows her feelings openly.
violent / intense
'heftig' and 'emotional' can both have to do with strong feelings. 'heftig' describes how strong or loud a reaction, argument, or criticism is. It is often about the intensity of the moment. 'emotional' more often describes that feelings play an important role or that a person shows their feelings strongly. A conversation can be emotional without becoming loud or aggressive. An argument is 'heftig' when it is very intense and tense. So 'emotional' is more general for feelings, while 'heftig' emphasizes the strong effect or intense course of events.

Bleiben wir beim Termin ruhig, auch wenn das Thema emotional ist.
Let's stay calm at the meeting, even if the topic is emotional.
In der Pause haben wir wegen der Arbeit heftig diskutiert.
During the break, we had a heated discussion about work.