Can we include one lightning component to another ?

Hi

Yes, you can include one lightning component to another as a parent and child component.

for examp:

<aura:component >

<lightning:tabset selectedTabId="openCases">

<lightning:tab label="Open Cases" id="openCases">
<c:Medicine_Community_Case_Component_Datatable caseType="open"/> // child component.
</lightning:tab>

</aura:component >

For more detail, you can refer blog.

Thanks