Bleeding heart and Do-gooder

Bleeding heart noun - Garden plant having deep-pink drooping heart-shaped flowers.

Do-gooder and bleeding heart are semantically related In some cases you can use "Do-gooder" instead a noun phrase "Bleeding heart".

Do-gooder noun - Someone devoted to the promotion of human welfare and to social reforms.

Bleeding heart and do-gooder are semantically related in idealist topic. You can use "Bleeding heart" instead a noun phrase "Do-gooder".