Always use the |caption= field, per WP:ACCESSIBLE. If the caption would duplicate a nearby section header, you can make it only used by screen-reader software via the {Screen reader-only} template.
Format 1
{Awards table|caption=Award nominations for ''Work''}
|-
! scope="row" | Year
| ''Work''
| Award
| {won}{end}
Award nominations for Hi kgagudi!
Year
Nominee / work
Award
Result
2018
Hi kgagudi!
Heritage Awards of Excellence
Won
Format 2
{Awards table|2|caption={Screen reader-only|Award nominations for ''Work''}
|-
! scope="row" | Year
| ''Work''
| Category
| {won}
| Notes
{end}
Award nominations for Work
Year
Nominated work
Category
Result
Notes
2000
Work
Category
Won
Note (co-authors etc.)
Format 3
{Awards table|3|caption={sronly|Award nominations for ''Work''}
|-
! scope="row" | Year
| Category
| Institution or publication
| {won}
| Notes
| Citation
{end}
Award nominations for Work
Year
Category
Institution or publication
Result
Notes
Ref.
2000
Category
Institution or publication
Won
Note (co-authors etc.)
[1]
Format 4
{Awards table|4}
|-
! scope="row" | Year
| ''Work''
| Category
| Award
| {won}
| Notes
| Citation
{end}
Year
Nominated work
Category
Award
Result
Notes
Ref.
2000
Work
Category
Award
Won
Note (co-authors etc.)
[1]
Format 5
References in the references column in this format will be centered.
{Awards table|5}
|-
! scope="row" | Year
| Award
| Category
| Nominees
| {won}
| Citation
{end}