site collection features - SharePoint Online

SharePoint Online lets you enable and disable site collection features that determine everything that should be available to users. Most site collection features are turned off by default.

To enable or disable a site collection feature

On any SharePoint sites, select Site contents in the top menu bar and then click Site settings.

On some sites, click Settings (Wheel icon - top right side) and then click Site Settings. If you don't see Site settings, click Site information and then click View all site settings.

On the Site settings page, click Site collection features under the Site Collection Administration heading.

Do one of the following on each site collection feature you want to enable or disable:

Click Activate to enable the site collection feature.
Click Deactivate to disable the site collection feature.
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When you activate SharePoint Server Standard Site Collection features, the below features will be activated.

Community Site Infrastructure
Display Templates for Search and Content Web Parts
Document Routing Resources
Item Form Recommendations
Portal Layouts Feature
Record Resources
Search Server Web Parts and Support Files
SharePoint Portal Server Local Site Directory Capture Control
Web Part Adder default groups

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When you activate SharePoint Server Enterprise Site Collection features, the below features will be activated.

Access Services

Chart Web Part

Community Site Infrastructure

Display Templates for Search and Content Web Parts
Document Routing Resources

Excel Services Application View Site Feature

Excel Services Application Web Part Site Feature

InfoPath Forms Services

Item Form Recommendations

Portal Layouts Feature

Record Resources

Search extensions

Search Server Web Parts and Support Files

SharePoint Portal Server Business Applications Content Type Definition

SharePoint Portal Server Local Site Directory Capture Control

Visio Web Access

Web Part Adder default groups

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When you activate SharePoint Server Publishing Infrastructure, the below features will be activated.

Asset Library

Display Templates for Search and Content Web Parts
Document Routing Resources
Enhanced Theming 
Enterprise Wiki Layouts

Html Design

Media Web Part

Mobile and Alternate Device Targeting

Page Layouts and Master Pages Pack

Portal Navigation

Publishing Prerequisites

Publishing Resources

Ratings

Record Resources

Search Server Web Parts and Support Files

Translation