Frequency: The word is one of the 3000 most common words in English.
1.
If two or more things are ~, there is a connection between them.
The philosophical problems of chance and of free will are closely ~.
= connected
ADJ
2.
People who are ~ belong to the same family.
...people in countries like Bangladesh who have been able to show they are ~ to a spouse or parent living in Britain.
ADJ: v-link ADJ, oft ADJ to n
3.
If you say that different types of things, such as languages, are ~, you mean that they developed from the same language.
Sanskrit is ~ very closely to Latin, Greek, and the Germanic and Celtic languages.
...closely ~ species.
ADJ: oft ADJ to n