Ideas for more contents on my dictionary app

Hello!

I am a coding novice learning SWIFT alone for one year, now writing the first app in my life ( a Chinese dictionary) by adopting some source codes available online.

I am thinking about enriching dictionary content. Below is from the swift file (DictionaryContent) where I store my dictionary contents

let WORDS = [
    "o": "I",
    "oo": "You",
    "ooo": "he",
]

"lemma + meaning" seems just too simple. There should be definitely more infos , such as phonetics, POS, example etc. I have thought about perhaps using Struct to store data, but dunno how to put it into practice...

In addition, I think I shall also modify code on ViewController to correspond to the changes in DictionaryContent. However, I really have no clue how to change.

Here is ViewController

import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var searchBar: UISearchBar!
    @IBOutlet weak var tableView: UITableView!

    var words: [String: String] = [:]
//maybe this shall be modified?
    var searchWords: [String: String] = [:]
//maybe this shall be modified?

    override func viewDidLoad() {
        super.viewDidLoad()
        
        searchBar.delegate = self
        tableView.delegate = self
        tableView.dataSource = self
        tableView.tableFooterView = UIView(frame: .zero)

        self.loadWords()
    }

    func loadWords (){
        self.words = WORDS
    }
}

extension ViewController: UITableViewDataSource, UITableViewDelegate{
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return searchWords.keys.count
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: SuggestionTableViewCell.self), for: indexPath) as! SuggestionTableViewCell
        print(cell)
        let key = Array(searchWords.keys)[indexPath.row]

        cell.wordLbl.text = key
        cell.meaningLabel.text = searchWords[key] ?? ""
        return cell
    }
}

extension ViewController:UISearchBarDelegate{
    func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
           self.searchWords = words.filter({ (key, value) -> Bool in
               return key.contains(searchText)
           })
           tableView.reloadData()
       }
}

Any advice would be wholeheartedly appreciated! Thanks in advance!