Seems you installed Office in Click-to-Run way, unfortunately it's not possible to select what you want to install by default
But you can try changing installation config to achieve this
As the answer in this post in Office Tech, you can add something like below in xml config to skip applications you don't want
<ExcludeApp ID= "Access" />
If you want only Word, then exclude all but Word in config like
<Configuration>
<Add OfficeClientEdition="64" >
<Product ID="ProPlusRetail">
<Language ID="en-us"/>
<ExcludeApp ID= "Access" />
<ExcludeApp ID= "Lync" />
<ExcludeApp ID= "Outlook" />
<ExcludeApp ID= "OneDrive" />
<ExcludeApp ID= "OneNote" />
<ExcludeApp ID= "Groove" />
<ExcludeApp ID= "Publisher" />
<ExcludeApp ID= "SharePointDesigner" />
<ExcludeApp ID= "PowerPoint" />
<ExcludeApp ID= "Excel" />
<ExcludeApp ID= "Visio" />
</Product>
</Add>
</Configuration>
After editing, save and run installer
Full Office product list from Microsoft TechNet
ID="Access"
ID="Excel"
ID="Groove"
ID="InfoPath"
ID="Lync"
ID="OneDrive"
ID="OneNote"
ID="Outlook"
ID="PowerPoint"
ID="Publisher"
ID="SharePointDesigner"
ID="Visio"
ID="Word"
preview
?customize
.