"A heart of stone" is a personification.
Please ask one question at a time.
Unless there is truly something wrong with your heart, then yes, it is an idiom. My heart fell, my heart exploded, my heart sang, my heart doing anything other than pumping blood is an analogy and an idiom.
Idiom
It is not an idiom. Unkindness is often called heartlessness, and so the expression "have a heart" means "Do not be unkind."
This idiom is wearing their heart on their sleeve. It means everyone can see how that person feels. Perhaps showing love towards another person.
Yes, "a heart of stone" is an example of personification because it attributes human characteristics (having a heart made of stone, which implies being cold, unfeeling, or unemotional) to an inanimate object.
imagery, simile, personification, and idiom
No! 'its raining cats and dogs' is an Idiom.
"Was a bombshell" is an idiom that means something was striking or shocking. It is not a simile, metaphor, or personification.
no, it is an idiom
No. It is an idiom that means you have an unsettled issue with someone.
Please ask one question at a time.
Unless there is truly something wrong with your heart, then yes, it is an idiom. My heart fell, my heart exploded, my heart sang, my heart doing anything other than pumping blood is an analogy and an idiom.
metaphor
Idiom
It is not an idiom. Unkindness is often called heartlessness, and so the expression "have a heart" means "Do not be unkind."
It is an idiom, because it does not use the term "like" or "as".