You can’t link to individual words.
As mentioned in the links above, Obsidian supports [[wikilinks]] to headings (and blocks):
[[Title of destination note#H3 header target]]
but there’s nothing in the documentation for using Markdown links to headings.
You could try an example from one of the links above:
- [Pokemon Overview](#Pokemon%20Overview)
- [See Also](#See%20Also)
## Pokemon Overview
<div id="#Pokemon%20Overview"></div>
## See Also
<div id="#See%20Also"></div>
Here are two feature requests that seem similar.