If you are willing to remove title “Keyword” in Keyword archive page then  WP Travel plugin provides the feature regarding removing title “Keyword” in Keyword archive page using filter code.

To remove title “Keyword” in Keyword archive page , please add following given code in functions.php file of your child theme.

add_filter('get_the_archive_title', function ( $title ) {
    if ( is_tax( 'travel_keywords' ) ) {
        return preg_replace( '/^[\w]+([\s]?\w+):/', '', $title );
    }
    return $title;
} );

For detail assistance regarding creating child theme, please refer link.

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Also, if you want to rename “Keyword” title in Keyword archive page then please add following given filter code in functions.php file of your child theme.

add_filter('get_the_archive_title', function ( $title ) {
    if ( is_tax( 'travel_keywords' ) ) {
        return preg_replace( '/^[\w]+([\s]?\w+):/', 'Your Text Here:', $title );
    }
    return $title;
} );

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