Vulnerable

Vulnerable is an adjective, and the Merriam Webster Dictionary gives the following definition:
1: capable of being physically or emotionally wounded
2: open to attack or damage : assailable
The noun form is vulnerability.
This word comes up a lot in the TED talk below, by "researcher-storyteller" Brené Brown. I don't like everything about this talk, but there are some things which I think are really important here, in terms of what she has to say about fear and vulnerability. Also, she speaks very informally, and she uses expressions like "I was like" to mean "I said." Although this isn't perfect English, it's definitely the way a lot of people speak! I recommend using the English subtitles, and I would be very interested in hearing your opinions about this.