annex

US /ˈæn.ɪks/
UK /ˈæn.ɪks/
"annex" picture
1.

append or add as an extra part, especially to a document

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The report had a detailed appendix annexed at the end.
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They decided to annex the new findings to the existing research paper.
:
appendaddattachsubjoin
2.

take possession of (territory) by conquest or occupation

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The country attempted to annex the neighboring region.
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Historically, many empires sought to annex new lands.
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conqueroccupytake overseizeappropriate
1.

an addition to a building

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The library added a new annex to house its growing collection.
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The old house had a small annex that served as a guest room.
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extensionadditionwingoutbuilding