What are the key differences between Asperger's syndrome and schizoid personality disorder?

Asperger's syndrome is a developmental disorder that affects social interaction and communication skills, while schizoid personality disorder is a mental health condition characterized by a lack of interest in social relationships and emotional coldness. People with Asperger's may struggle with understanding social cues and may have intense interests in specific topics, while those with schizoid personality disorder tend to prefer solitude and have difficulty expressing emotions.